This document discusses anti-virus strategies for large corporations. It notes that virus outbreaks are getting out of hand as users won't scan or care about viruses. The document examines various anti-virus technologies like scanners, memory resident programs, device drivers, and heuristic analysis. It recommends a multi-layered approach using different technologies along with clear policies, education of staff, and independent testing of anti-virus software.
Malware poses a serious and growing threat to organizations. Viruses, worms, spyware and other malware are becoming more sophisticated and adept at evading traditional defenses. A single integrated platform like VIPRE Antivirus Business that provides high-performance malware detection across multiple threat types with minimal system impact may be needed to effectively address the new wave of malware.
Beyond layers and peripheral antivirus securityUltraUploader
This white paper from Trend Micro discusses strategies for effective antivirus security beyond just protecting desktops. It argues that while desktop protection is still important, viruses often spread faster than antivirus updates can be deployed to endpoints. It therefore recommends taking additional measures across the network like stopping viruses at email/file servers, firewalls, and through education. The paper provides an overview of virus impacts and outlines Trend Micro's solutions that can block new threats before pattern updates and help repair damage.
14 household ways to protect your computer from virusesar-rifke.com
The document provides 14 household ways to protect computers from viruses, including using anti-virus software, scanning files before opening them, deleting suspicious emails, disabling dangerous file extensions, updating software regularly, and backing up important files. It warns about common ways viruses spread, such as email attachments, and advises users to be cautious of unfamiliar files and programs from untrusted sources.
As the internet becomes more integrated into everyday lives, we must learn to defend against new online attack types. Today's hackers commonly use multi-layered attacks like a worm in a chat message linking to an infected webpage. Worms uncover vulnerabilities and report them back to hackers, who then quickly assemble malware from pre-made components to exploit the vulnerability before most can download a fix. The document provides tips to protect against emerging sophisticated, multi-faceted threats, including using strong security software, enabling automatic updates, using caution with attachments and downloads, and being aware of current threats.
The document discusses the challenges of combating computer viruses given their ability to spread rapidly. It notes that a single virus writer can trigger a chain reaction that infects thousands of computers. Recent viruses like SoBig demonstrated this danger, with one version found in half of all emails scanned. While some blame careless users, the document argues users are overwhelmed by the complex tech landscape. It also discusses challenges faced by administrators and software companies in keeping systems fully protected given the difficulties of eliminating all vulnerabilities from hugely complex programs like Windows.
Information security for health practitionersDanny Doobay
The document provides 12 ways for health practitioners to protect clients' information and themselves from security breaches. It recommends using updated software and strong passwords, standard user accounts, antivirus software, firewalls, and securely storing and backing up data. Public networks and computers should be avoided. Regular software and security updates, password changes, and scans help prevent breaches of private health information.
A bit of viral protection is worth a megabyte of cureUltraUploader
This document provides information and advice about computer viruses. It discusses how viruses spread and the damage they can cause. It emphasizes that following basic safety practices like backing up files, scanning disks from unknown sources, and using antivirus software can help protect against viruses. The document also provides details on antivirus software options and procedures for detecting and removing viruses in the computing labs.
Information security is the process of protecting digital information and systems from unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction. The document discusses challenges to information security like identity theft, malware, patch management failures and distributed denial of service attacks. It provides best practices for protecting digital assets such as using antivirus software, updating systems, and implementing personal firewalls and wireless security measures. There is a growing need for information security professionals to address issues around security, education and workforce development.
Malware poses a serious and growing threat to organizations. Viruses, worms, spyware and other malware are becoming more sophisticated and adept at evading traditional defenses. A single integrated platform like VIPRE Antivirus Business that provides high-performance malware detection across multiple threat types with minimal system impact may be needed to effectively address the new wave of malware.
Beyond layers and peripheral antivirus securityUltraUploader
This white paper from Trend Micro discusses strategies for effective antivirus security beyond just protecting desktops. It argues that while desktop protection is still important, viruses often spread faster than antivirus updates can be deployed to endpoints. It therefore recommends taking additional measures across the network like stopping viruses at email/file servers, firewalls, and through education. The paper provides an overview of virus impacts and outlines Trend Micro's solutions that can block new threats before pattern updates and help repair damage.
14 household ways to protect your computer from virusesar-rifke.com
The document provides 14 household ways to protect computers from viruses, including using anti-virus software, scanning files before opening them, deleting suspicious emails, disabling dangerous file extensions, updating software regularly, and backing up important files. It warns about common ways viruses spread, such as email attachments, and advises users to be cautious of unfamiliar files and programs from untrusted sources.
As the internet becomes more integrated into everyday lives, we must learn to defend against new online attack types. Today's hackers commonly use multi-layered attacks like a worm in a chat message linking to an infected webpage. Worms uncover vulnerabilities and report them back to hackers, who then quickly assemble malware from pre-made components to exploit the vulnerability before most can download a fix. The document provides tips to protect against emerging sophisticated, multi-faceted threats, including using strong security software, enabling automatic updates, using caution with attachments and downloads, and being aware of current threats.
The document discusses the challenges of combating computer viruses given their ability to spread rapidly. It notes that a single virus writer can trigger a chain reaction that infects thousands of computers. Recent viruses like SoBig demonstrated this danger, with one version found in half of all emails scanned. While some blame careless users, the document argues users are overwhelmed by the complex tech landscape. It also discusses challenges faced by administrators and software companies in keeping systems fully protected given the difficulties of eliminating all vulnerabilities from hugely complex programs like Windows.
Information security for health practitionersDanny Doobay
The document provides 12 ways for health practitioners to protect clients' information and themselves from security breaches. It recommends using updated software and strong passwords, standard user accounts, antivirus software, firewalls, and securely storing and backing up data. Public networks and computers should be avoided. Regular software and security updates, password changes, and scans help prevent breaches of private health information.
A bit of viral protection is worth a megabyte of cureUltraUploader
This document provides information and advice about computer viruses. It discusses how viruses spread and the damage they can cause. It emphasizes that following basic safety practices like backing up files, scanning disks from unknown sources, and using antivirus software can help protect against viruses. The document also provides details on antivirus software options and procedures for detecting and removing viruses in the computing labs.
Information security is the process of protecting digital information and systems from unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction. The document discusses challenges to information security like identity theft, malware, patch management failures and distributed denial of service attacks. It provides best practices for protecting digital assets such as using antivirus software, updating systems, and implementing personal firewalls and wireless security measures. There is a growing need for information security professionals to address issues around security, education and workforce development.
A computer virus is a malicious program that attaches itself to other files and programs to spread without permission. It can slow down or crash an infected computer by using system resources. A Trojan horse also spreads maliciously but does not replicate, instead masquerading as a desirable program. A worm replicates like a virus but spreads through networks instead of attaching to files. Antivirus software with up-to-date definitions is the best protection, but it requires regular updates after subscriptions expire. Backing up important data files regularly and storing backups separately is also crucial, as hardware and files will inevitably fail or become corrupted.
Justifying IT Security: Managing Risk judythornell
The document discusses justifying IT security programs and managing risk. It argues that security should be viewed as risk management rather than trying to achieve complete freedom from risk. An effective security program identifies vulnerabilities that could lead to losses if exploited by threats, and implements cost-effective countermeasures to mitigate those vulnerabilities. This optimizes risk while justifying security spending based on specific risks and countermeasures.
The document provides an overview of a Microsoft Office training course on security and how the 2007 Office system helps increase security. It discusses security threats like viruses, worms and spyware. It defines different types of malicious software and how they can infect computers. It emphasizes the importance of antivirus software, security updates, strong passwords and backups. It also provides tips for secure email use and explains new security features in Office 2007 like the message bar.
The document summarizes the findings of a security study conducted by Rotman School of Management and TELUS Security Labs. Some key findings include: breaches have grown 29% but costs are down 78%; attackers are targeting specific vulnerabilities instead of widespread malware; data loss and compliance are top concerns; and investment in security is still below optimal levels despite growing threats. The document advocates for better security integration, managing third party risks, and focus on prevention over reactive technologies.
A Trip to ICT and Society Series 1 : INFECTED! PART 2ianpoblete13
This document provides information on the 10 most lethal computer viruses of all time, including details on the Storm virus, Leap-A/Oompa-A virus, Sasser and Netsky viruses, MyDoom virus, and Melissa virus. It also lists and describes the top 10 latest computer viruses and the best antivirus software today, such as Bitdefender, Kaspersky, and Norton antivirus.
Computer security risks include viruses, worms, Trojan horses, and other malware that can damage systems. Viruses are programs that can replicate and spread from one computer to another, while worms copy themselves and spread without user interaction. Trojan horses appear to have useful functions but secretly perform unwanted actions. Antivirus programs identify and remove viruses, worms, and Trojan horses, and must be frequently updated. Firewalls, passwords, backups, and avoiding opening suspicious email attachments help protect against security risks.
Kaspersky North American Virus Analyst SummitPR Americas
Kaspersky Lab analysts are seeing over 50,000 new malware threats per day in the lab. The best defense against these threats is knowledge. Our Global Research and Analysis Team provided succinct presentations and discussion about the latest Internet threats that exist today, and offered tips to protect attendees from cybercriminals. These presentations provided a greater understanding of the threat landscape and what to expect throughout the rest of 2010.
The document discusses how approximately 50% of security breaches in the Federal Government are caused by a lack of user compliance. While security technologies have improved, end-user behavior can undermine security efforts if users are not properly educated. The biggest cyber threat organizations face is naïve end-users. It is important for organizations to develop cyber awareness programs to modify user behavior and make users the first line of defense against threats. These programs should use clear, non-technical language and involve listening to end-users to address weaknesses in security.
The document provides an overview of security in Microsoft Office 2007, explaining how new features help protect users from malware in files. It discusses threats like viruses, worms, and macros that can infect computers through emails and documents. The 2007 Office system automatically disables potentially risky features like macros when files are opened, and notifies users via the Message Bar so they can decide whether to enable or trust the content.
The document discusses computer viruses and malware. It defines viruses, worms, Trojans, spyware and adware as examples of malware. It describes how viruses, worms and Trojans work, what they can do and who might create them. It lists symptoms of virus infection and provides guidance for virus-free computing such as scanning disks from external sources and using antivirus software.
Application of hardware accelerated extensible network nodes for internet wor...UltraUploader
This document proposes a hardware-accelerated system that uses field-programmable gate arrays (FPGAs) to actively detect and block internet worms and viruses at multi-gigabit speeds. It scans packet payloads in real-time to search for signatures of malicious software and can dynamically reconfigure to detect new threats. The system is designed to be incrementally deployed throughout the internet to quarantine infections locally and limit global spread. It aims to provide faster and more effective protection than software-based solutions by processing packet content directly in network hardware.
The National Audit Office published a report investigating the WannaCry cyber attack on the NHS in October 2017. The report found:
1) The NHS had shoddy IT systems and cybersecurity practices that made it vulnerable to the attack, such as unpatched Windows operating systems and a lack of firewalls.
2) The NHS had no effective breach response plan, resulting in confusion and a disorganized response when systems went down.
3) For real improvement, the NHS must implement rigorous cybersecurity drills, inspections, and consequences for non-compliance - but the disjointed structure of the NHS may prevent this.
Reveelium is meant to bridge the intelligence gap that antiviruses are confronted with and to cure all side-effects, bringing detection times down from a typical 12 months to 1 week and reduces false positives by 95%.
The case studies in this presentation are real life examples of ransomware attacks on health care organizations, and are intended to help physicians respond appropriately for when this type of cyber crime occurs.
This document discusses information security and privacy issues related to computer viruses. It begins by providing background on viruses and their ability to cause damage and disruption. It then defines what a computer virus is and describes how they work, infecting other programs and replicating. The document outlines various ways viruses can be acquired and categories of viruses. It also discusses the lifecycle of viruses and measures that can be taken to prevent virus infections, including using antivirus software and firewalls. The document concludes by covering data security issues, common types of security breaches, and the costs to companies from virus damage.
This document is a learning module on computer security that contains the following information:
1. It introduces the topic of computer security and focuses on a specific learning outcome of identifying security threats and measures to overcome them.
2. It provides information on antivirus software, including how to scan for viruses using example antivirus software. It also discusses spyware, how to detect it using example anti-spyware software, and cryptography techniques including Caesar cipher encryption and decryption as a security measure for transmitting information.
3. The module contains assessments and enrichment activities for students to apply what they have learned about computer security techniques.
Adequacy of checksum algorithms for computer virus detectionUltraUploader
Checksums are used to detect changes in files and detect computer viruses. However, checksum algorithms that detect random errors are not sufficient against an entity deliberately trying to fool the checksum. An attacker can insert forged data that generates the same checksum as the original. The paper discusses three types of attacks against checksums (brute force, birthday, trap door) and features needed for checksum algorithms to be resistant to attackers, such as having a long length and being non-invertible. It also describes tests to evaluate if a checksum algorithm provides even mapping and is non-invertible.
This document discusses a potential type of malicious software called a "semantic virus" that could undermine the utility of semantic search engines by generating and submitting random, syntactically valid but semantically incorrect RDF data. The virus would take existing RDF triples as input and generate new, related triples that are fake, such as claiming "Galway is part of England". It could submit this noisy data at scale using services like Ping The Semantic Web. While digital signatures can address authentication, there is an open challenge to validate the quality and accuracy of semantic data at internet scale.
A software authentication system for the prevention of computer virusesUltraUploader
This document proposes a software authentication system to help prevent the spread of computer viruses. It begins by reviewing existing anti-virus approaches like pattern-matching and checksum verification. These approaches have limitations, as they cannot detect new viruses and rely on an assumption that all software is virus-free. The proposed system aims to overcome these issues by having software vendors digitally sign their programs, without requiring a central trusted authority. Vendors generate their own keys, and certification centers hold pieces of the private key to authenticate signatures locally without user interaction. This allows vendors to verify software authenticity while maintaining independence.
Anti disassembly using cryptographic hash functionsUltraUploader
This document proposes and evaluates a new method of anti-disassembly for computer viruses based on cryptographic hash functions. It uses dynamic code generation to obscure viral code until runtime, making static analysis difficult. The method finds byte sequences or "runs" within hash function outputs by brute-forcing salt values concatenated to an input key. Empirical tests found salts to produce desired runs for MD5, SHA-1 and SHA-256 in hours on a desktop computer, demonstrating the method's viability. It is portable, targeted, and the code is never present in analyzable form before running.
Advanced routing worm and its security challengesUltraUploader
An advanced routing worm is presented that can propagate faster than traditional worms. It does this by only scanning addresses that are routable based on Border Gateway Protocol (BGP) routing tables, reducing the scanning space. This allows the routing worm to spread up to three times faster than worms that scan the entire IPv4 address space. Additionally, the geographic information from BGP tables enables selective attacks targeting specific countries, companies, or networks. Routing worms pose new security challenges and are important to study for simulating internet-scale worm propagation.
A computer virus is a malicious program that attaches itself to other files and programs to spread without permission. It can slow down or crash an infected computer by using system resources. A Trojan horse also spreads maliciously but does not replicate, instead masquerading as a desirable program. A worm replicates like a virus but spreads through networks instead of attaching to files. Antivirus software with up-to-date definitions is the best protection, but it requires regular updates after subscriptions expire. Backing up important data files regularly and storing backups separately is also crucial, as hardware and files will inevitably fail or become corrupted.
Justifying IT Security: Managing Risk judythornell
The document discusses justifying IT security programs and managing risk. It argues that security should be viewed as risk management rather than trying to achieve complete freedom from risk. An effective security program identifies vulnerabilities that could lead to losses if exploited by threats, and implements cost-effective countermeasures to mitigate those vulnerabilities. This optimizes risk while justifying security spending based on specific risks and countermeasures.
The document provides an overview of a Microsoft Office training course on security and how the 2007 Office system helps increase security. It discusses security threats like viruses, worms and spyware. It defines different types of malicious software and how they can infect computers. It emphasizes the importance of antivirus software, security updates, strong passwords and backups. It also provides tips for secure email use and explains new security features in Office 2007 like the message bar.
The document summarizes the findings of a security study conducted by Rotman School of Management and TELUS Security Labs. Some key findings include: breaches have grown 29% but costs are down 78%; attackers are targeting specific vulnerabilities instead of widespread malware; data loss and compliance are top concerns; and investment in security is still below optimal levels despite growing threats. The document advocates for better security integration, managing third party risks, and focus on prevention over reactive technologies.
A Trip to ICT and Society Series 1 : INFECTED! PART 2ianpoblete13
This document provides information on the 10 most lethal computer viruses of all time, including details on the Storm virus, Leap-A/Oompa-A virus, Sasser and Netsky viruses, MyDoom virus, and Melissa virus. It also lists and describes the top 10 latest computer viruses and the best antivirus software today, such as Bitdefender, Kaspersky, and Norton antivirus.
Computer security risks include viruses, worms, Trojan horses, and other malware that can damage systems. Viruses are programs that can replicate and spread from one computer to another, while worms copy themselves and spread without user interaction. Trojan horses appear to have useful functions but secretly perform unwanted actions. Antivirus programs identify and remove viruses, worms, and Trojan horses, and must be frequently updated. Firewalls, passwords, backups, and avoiding opening suspicious email attachments help protect against security risks.
Kaspersky North American Virus Analyst SummitPR Americas
Kaspersky Lab analysts are seeing over 50,000 new malware threats per day in the lab. The best defense against these threats is knowledge. Our Global Research and Analysis Team provided succinct presentations and discussion about the latest Internet threats that exist today, and offered tips to protect attendees from cybercriminals. These presentations provided a greater understanding of the threat landscape and what to expect throughout the rest of 2010.
The document discusses how approximately 50% of security breaches in the Federal Government are caused by a lack of user compliance. While security technologies have improved, end-user behavior can undermine security efforts if users are not properly educated. The biggest cyber threat organizations face is naïve end-users. It is important for organizations to develop cyber awareness programs to modify user behavior and make users the first line of defense against threats. These programs should use clear, non-technical language and involve listening to end-users to address weaknesses in security.
The document provides an overview of security in Microsoft Office 2007, explaining how new features help protect users from malware in files. It discusses threats like viruses, worms, and macros that can infect computers through emails and documents. The 2007 Office system automatically disables potentially risky features like macros when files are opened, and notifies users via the Message Bar so they can decide whether to enable or trust the content.
The document discusses computer viruses and malware. It defines viruses, worms, Trojans, spyware and adware as examples of malware. It describes how viruses, worms and Trojans work, what they can do and who might create them. It lists symptoms of virus infection and provides guidance for virus-free computing such as scanning disks from external sources and using antivirus software.
Application of hardware accelerated extensible network nodes for internet wor...UltraUploader
This document proposes a hardware-accelerated system that uses field-programmable gate arrays (FPGAs) to actively detect and block internet worms and viruses at multi-gigabit speeds. It scans packet payloads in real-time to search for signatures of malicious software and can dynamically reconfigure to detect new threats. The system is designed to be incrementally deployed throughout the internet to quarantine infections locally and limit global spread. It aims to provide faster and more effective protection than software-based solutions by processing packet content directly in network hardware.
The National Audit Office published a report investigating the WannaCry cyber attack on the NHS in October 2017. The report found:
1) The NHS had shoddy IT systems and cybersecurity practices that made it vulnerable to the attack, such as unpatched Windows operating systems and a lack of firewalls.
2) The NHS had no effective breach response plan, resulting in confusion and a disorganized response when systems went down.
3) For real improvement, the NHS must implement rigorous cybersecurity drills, inspections, and consequences for non-compliance - but the disjointed structure of the NHS may prevent this.
Reveelium is meant to bridge the intelligence gap that antiviruses are confronted with and to cure all side-effects, bringing detection times down from a typical 12 months to 1 week and reduces false positives by 95%.
The case studies in this presentation are real life examples of ransomware attacks on health care organizations, and are intended to help physicians respond appropriately for when this type of cyber crime occurs.
This document discusses information security and privacy issues related to computer viruses. It begins by providing background on viruses and their ability to cause damage and disruption. It then defines what a computer virus is and describes how they work, infecting other programs and replicating. The document outlines various ways viruses can be acquired and categories of viruses. It also discusses the lifecycle of viruses and measures that can be taken to prevent virus infections, including using antivirus software and firewalls. The document concludes by covering data security issues, common types of security breaches, and the costs to companies from virus damage.
This document is a learning module on computer security that contains the following information:
1. It introduces the topic of computer security and focuses on a specific learning outcome of identifying security threats and measures to overcome them.
2. It provides information on antivirus software, including how to scan for viruses using example antivirus software. It also discusses spyware, how to detect it using example anti-spyware software, and cryptography techniques including Caesar cipher encryption and decryption as a security measure for transmitting information.
3. The module contains assessments and enrichment activities for students to apply what they have learned about computer security techniques.
Adequacy of checksum algorithms for computer virus detectionUltraUploader
Checksums are used to detect changes in files and detect computer viruses. However, checksum algorithms that detect random errors are not sufficient against an entity deliberately trying to fool the checksum. An attacker can insert forged data that generates the same checksum as the original. The paper discusses three types of attacks against checksums (brute force, birthday, trap door) and features needed for checksum algorithms to be resistant to attackers, such as having a long length and being non-invertible. It also describes tests to evaluate if a checksum algorithm provides even mapping and is non-invertible.
This document discusses a potential type of malicious software called a "semantic virus" that could undermine the utility of semantic search engines by generating and submitting random, syntactically valid but semantically incorrect RDF data. The virus would take existing RDF triples as input and generate new, related triples that are fake, such as claiming "Galway is part of England". It could submit this noisy data at scale using services like Ping The Semantic Web. While digital signatures can address authentication, there is an open challenge to validate the quality and accuracy of semantic data at internet scale.
A software authentication system for the prevention of computer virusesUltraUploader
This document proposes a software authentication system to help prevent the spread of computer viruses. It begins by reviewing existing anti-virus approaches like pattern-matching and checksum verification. These approaches have limitations, as they cannot detect new viruses and rely on an assumption that all software is virus-free. The proposed system aims to overcome these issues by having software vendors digitally sign their programs, without requiring a central trusted authority. Vendors generate their own keys, and certification centers hold pieces of the private key to authenticate signatures locally without user interaction. This allows vendors to verify software authenticity while maintaining independence.
Anti disassembly using cryptographic hash functionsUltraUploader
This document proposes and evaluates a new method of anti-disassembly for computer viruses based on cryptographic hash functions. It uses dynamic code generation to obscure viral code until runtime, making static analysis difficult. The method finds byte sequences or "runs" within hash function outputs by brute-forcing salt values concatenated to an input key. Empirical tests found salts to produce desired runs for MD5, SHA-1 and SHA-256 in hours on a desktop computer, demonstrating the method's viability. It is portable, targeted, and the code is never present in analyzable form before running.
Advanced routing worm and its security challengesUltraUploader
An advanced routing worm is presented that can propagate faster than traditional worms. It does this by only scanning addresses that are routable based on Border Gateway Protocol (BGP) routing tables, reducing the scanning space. This allows the routing worm to spread up to three times faster than worms that scan the entire IPv4 address space. Additionally, the geographic information from BGP tables enables selective attacks targeting specific countries, companies, or networks. Routing worms pose new security challenges and are important to study for simulating internet-scale worm propagation.
This document proposes a general, formal definition of malware as a single sentence in modal logic. It defines malware as software that causes incorrectness in other software. It also derives formal definitions for benign software (benware), anti-malware, and medical software for affected systems (medware) based on this definition of malware. The document argues that its definition of malware is abstract and independent of specific malware manifestations, making it generally applicable.
A filter that prevents the spread of mail attachment-type trojan horse comput...UltraUploader
The document describes a mail filter developed to prevent the spread of the "W32/Sircam" computer worm via email attachments. The filter checks for specific phrases and file extensions associated with W32/Sircam. When implemented on an email server, the filter successfully rejected all emails containing W32/Sircam without delaying other email traffic, ending the worm outbreak on the network within 4 days. The filter demonstrates how targeted filtering can block malware spread through email without overly restricting normal email flows.
This document summarizes a technical report about a framework called Honeyd that allows for the creation of virtual honeypots. Honeyd simulates entire computer systems at the network level by emulating different operating system behaviors and can provide arbitrary routing topologies and services. It is designed to deceive network fingerprinting and mapping tools for security purposes such as detecting attacks and studying adversaries.
A study of detecting computer viruses in real infected files in the n-gram re...UltraUploader
This document discusses detecting computer viruses in real-infected executable files using machine learning methods and n-gram representations. It created three datasets: benign files, virus loader files, and real infected executable files. Experiments showed that while machine learning methods can detect viruses in small virus loader files, detecting viruses is nearly impossible in real infected executable files when represented as n-grams due to the high dimensionality and low information content of the n-gram vectors. The document explores this limitation from an information theoretic perspective and through classification experiments.
This document proposes an email worm vaccine architecture that uses behavior-based anomaly detection to intercept incoming emails and scan attachments in virtual machines to detect malicious software. The system includes a virtual machine cluster to open attachments safely, a host-based intrusion detection system to monitor for dangerous behaviors, and an email-aware mail transfer agent to classify messages and communicate with the detection system. The implementation demonstrates detecting malware using parallel virtual machines while maintaining a low false positive rate.
A model for detecting the existence of unknown computer viruses in real timeUltraUploader
This document describes a model for detecting unknown computer viruses in real-time by monitoring for deviations from expected program behavior. The model involves instrumenting programs to observe internal states and outputs when different input sequences are provided. Any differences from a program's normal behavior could signal that the program has been corrupted by a virus or other malicious attack. While this model may be effective, its main challenge is the enormous time and space requirements needed to track all possible program states and histories at a practical scale.
A semantics based approach to malware detectionUltraUploader
This document proposes a semantics-based framework for malware detection that reasons about program behavior. It defines what it means for a detector to be sound and complete with respect to obfuscations. The framework uses trace semantics to characterize program behaviors and abstract interpretation to ignore irrelevant details. It shows this framework in action by proving a previous semantics-aware malware detector is complete against common obfuscations.
A physiological decomposition of virus and worm programsUltraUploader
This thesis presents a physiological model of viruses and worms by identifying their distinct functional organs or components. It analyzes existing virus and worm programs to understand how they implement malicious behaviors. The goal is to provide a framework for developing proactive techniques to detect known and unknown viruses based on their physiological properties, unlike current reactive antivirus methods. The thesis studies virus and worm implementations in Microsoft VBA and VBScript to illustrate key behaviors. It aims to advance the field from a reactive to proactive approach through a deeper understanding of viral physiology.
A memory symptom based virus detection approachUltraUploader
This document proposes a new memory symptom-based approach for virus detection. It summarizes that traditional anti-virus software relies on pattern matching which has problems like damage during the zero-day period before new virus patterns are added. The proposed approach detects viruses based on their memory usage symptoms during execution, rather than pattern matching. An experiment analyzed the memory usage curves of 109 test programs and was able to detect viruses with 97% true positive rate and only 13% false positive rate, showing the effectiveness of this symptom-based approach.
An overview of computer viruses in a research environmentUltraUploader
This document provides an overview of computer viruses in a research environment. It examines computer viruses as malicious software, relates them to models of security and integrity, and looks at research techniques for controlling threats from viruses and other malicious code. The document focuses on environments like UNIX and VAX/VMS operating systems used for research and development.
Analysis and detection of metamorphic computer virusesUltraUploader
This document presents research on analyzing and detecting metamorphic computer viruses. It examines four virus creation kits to quantify their ability to generate variant viruses. Hidden Markov models are developed and shown to accurately classify viruses as belonging to a particular family, outperforming three commercial virus scanners. A simpler detection method using similarity indexing also detects metamorphic viruses with high accuracy. The research demonstrates that current commercial scanners cannot detect the most advanced metamorphic viruses, but the presented techniques can detect such viruses effectively.
An approach to containing computer virusesUltraUploader
This document proposes a mechanism for detecting modifications to executable files using encryption. The mechanism works by encrypting executables using a cryptosystem. At runtime, the encrypted executable is decrypted and checked for modifications before being executed. If modifications are detected, the proper authorities are notified. While this mechanism cannot prevent modifications, it can detect them when they occur and limit the potential damage of computer viruses. The mechanism is most effective when all executables are encrypted, but can still provide some protection even if not all files are encrypted.
A theoretical model of differential social attributions toward computing tech...UltraUploader
This document proposes a theoretical model to explain how and why people attribute human characteristics to computing technologies. It discusses how the common practice of anthropomorphism, or ascribing human traits to computers, can have both positive and negative effects. The model suggests that an individual's perspective on the computer exists on a continuum between viewing it as a locally simplex tool or a globally complex entity. One's position is influenced by the social cues of the technology, the person's self-evaluation, the interaction context, and available attributional cues. The goal is to better understand this phenomenon and guide future research on social interactions with technology.
Application of data mining based malicious code detection techniques for dete...UltraUploader
This document discusses using data mining techniques to detect spyware. It applies Naive Bayes algorithms used in previous work to detect viruses to a dataset of 312 benign and 614 spyware executables. Feature extraction examines byte sequences in files. Initial tests showed low accuracy, but removing Trojan programs from the dataset improved results, with a window size of 4 and without Trojans achieving 80% detection with a 4% false positive rate. Future work proposes testing against larger window sizes and obfuscated code.
Malicious software like viruses, spyware, and Trojans can damage your computer and lead to identity theft. To detect malware, check for strange computer behavior like slow performance or unexpected file downloads. Use antivirus software to scan for and remove malware, and keep the software up to date to protect against new threats. Regularly applying operating system and software updates also helps prevent infections.
Protecting Against the New Wave of MalwareGFI Software
This Osterman Research white paper examines why older, traditional antivirus approaches don't work and why a new approach to endpoint security is required to better protect your users, your data and your long-term viability as a company from malicious threats. Learn about the scope of the malware problem and strategies that can help you defend against evolving malware threats.
Many small and medium sized businesses are still unaware of the threats that exist. This guide to security threats for SMBs outlines the most common threats and how they can be dealt with.
VIPRE Business Takes a Bite out of BloatwareGFI Software
The remedy to bloatware is a better, more efficient product that is specifically engineered to scan, detect and remove myriad security threats without impacting performance and taking a big bite out of the IT capital expenditure budgets. Learn about the scope of the malware problem and strategies that can help you defend against evolving malware threats.
The document outlines an agenda for a security meeting covering topics such as backup systems, virus protection, and Q&A. It then discusses various security threats like natural disasters, computer viruses, and hacking. Finally, it provides guidance on backup strategies, virus protection, and how to protect business data.
Champaign EDC Cybersecurity Seminar by John Bambenek - March 25, 2014John Bambenek
Every day we hear more and more about credit cards getting stolen, businesses getting hacked and national secrets being pilfered from our government. In this seminar, you’ll learn:
- what threats small businesses need to be aware of
- what threats are hype
- how small businesses can protect themselves in a cost-effective way
- you’ll walk away with 5 things you can do in your small business to be more secure without having to buy a single piece of software
This document provides an introduction to computer viruses, including what they are, how they spread, and how to protect against them. It defines viruses and explains that they are programs that can damage computers. Viruses typically spread by opening infected files or sharing media. To protect against viruses, the document recommends installing anti-virus software and keeping it updated, being cautious of files from unknown sources, and regularly scanning your computer. It also provides information on free anti-virus software available through the university and instructions for what to do if your computer becomes infected.
Cyberattacks on the Rise: Is Your Nonprofit Prepared?TechSoup
Cyberattacks against small and midsize organizations have increased from 11 percent to 15 percent in 2020, according to an Avast survey. Nonprofits are no exception to this alarming trend, which results in lost productivity, damaged reputations, and serious financial implications. Whether you’re a one-person IT team or a nontechnical concerned stakeholder, this webinar will help you
- Protect your organization from common malware attacks
- Set up a strong cybersecurity strategy for your organization
- Identify solutions to help minimize cyberattack risks
Scott Brown tested 13 popular antivirus programs using 10 zero-day viruses and 2 exploits. NOD32 and Kaspersky detected the most viruses initially, while after 1 week NOD32, F-Secure, and Kaspersky detected the most with updated definitions. Based on the tests, NOD32 used the fewest system resources and had the best support, leading Brown to conclude it was the best option. Brown will require NOD32 on all computers connecting to his college network.
Malware infections in hospitals can endanger patient safety by causing issues with monitoring equipment and devices. Hospitals often use outdated operating systems that are vulnerable to attacks. Infections usually originate from the internal network or devices brought into the hospital. Infected computers and equipment must be taken offline until cleaned, limiting available resources.
Remote working has increased cyber security risks for organizations. Ransomware attacks targeting remote employees have increased over 283% during the pandemic. Many organizations were unprepared for securing remote access and lacked measures to prevent human error from leading to attacks. While some organizations implemented VPNs and two-factor authentication, many did not take security seriously working from home. Improving employee security awareness and using VPNs for all remote access can help organizations better prevent ransomware attacks in the future.
- Traditional endpoint protection has failed to prevent the increasing number of data breaches, with roughly five times more breaches occurring today than 10 years ago despite increased spending on cybersecurity.
- Existing approaches fall into the categories of "default allow", which allows unknown files and leads to compromise, or "default deny", which blocks productivity.
- Comodo's "true default deny" uses lightweight containers to run unknown files safely without risk of infection, while cloud-based analysis determines if files are good or bad very quickly, providing security without compromising usability.
ybersecurity is an increasing
concern for many in the
medical cybersecurity and
information technology
professions. As computerized
devices in medical facilities
become increasingly networked
within their own walls and
with external facilities, the risk
of cyberattacks also increases,
threatening confidentiality,
safety, and well-being. This
article describes what health
care organizations and
imaging professionals should
do to minimize the risks.
Panda Adaptive Defense 360 - Cyber Extortion GuidePanda Security
What is Cyber Extortion? How do cybercriminals use ransomware for attacks? What to do if you are a victim of cyber extortion?
Panda Security answers all these questions and gives you some recommendations and advises to prevent Cyberattacks in this Practical Security Guide to Prevent Cyber Extortion.
We, at Panda, have developed the first solution that guarantees continuous monitoring of all the active processes: Adaptive Defense 360
http://promo.pandasecurity.com/adaptive-defense/en/
Security software: Choosing the best antivirus software, Antivirus software, firewall, anti spyware, spam blockers.Which? explains why computer security software is so important
The document discusses computer viruses, including their history, how they spread, symptoms, and prevention methods. It notes that viruses are created by individuals to copy themselves and infect other computers. Today, 87% spread through the internet within hours or days. Symptoms include computers not booting, slowing down, or crashing. The best prevention methods involve using updated antivirus software, being cautious of unexpected files/attachments, and educating others to limit spread.
IT security threats pose significant risks to businesses. Left unaddressed, security breaches can waste substantial time and resources recovering from viruses, malware, and data loss. Comprehensive endpoint security solutions are needed to protect against increasingly sophisticated attacks like phishing and rogue malware. Choosing a multilayered defense that provides real-time monitoring and easy management can help organizations stay productive and avoid potential costs of £5,000 or more to repair cyber attacks.
The document discusses the need for information security professionals and provides an overview of information security. It describes how connecting to the internet exposes computers to risks from malicious actors. It then covers key topics in information security including identity theft, malware, patch management failures, and distributed denial of service attacks. The document concludes by recommending best practices for protecting digital assets such as using antivirus software, firewalls, and keeping systems updated with the latest patches.
The survey found that:
- 82% of organizations experienced at least one online attack or threat in the last year, with the average company experiencing three types.
- While ransomware was less common, it had the highest severity of impact. Browser vulnerabilities were identified as the biggest challenge to endpoint security.
- The most common impacts of attacks were increased help desk workload and reduced employee productivity. Most organizations now use multiple endpoint security solutions due to the ineffectiveness of traditional antivirus against advanced malware.
This document is the manual for PHP, the PHP Documentation Group's copyright from 1997 to 2002. It contains information about installing and configuring PHP on various operating systems like Unix, Linux, Windows, etc. It also covers PHP syntax, functions, classes, and other features. The manual is distributed under the GNU General Public License and parts of it are also distributed under the Open Publication License. It was translated into Italian with contributions from multiple people.
Broadband network virus detection system based on bypass monitorUltraUploader
The document describes a Broadband Network Virus Detection System (VDS) based on bypass monitoring that can detect viruses on high-speed networks. The VDS uses four detection engines to analyze network traffic for viruses based on binary content, URLs, emails, and scripts. It accurately logs statistical information on detected viruses like name, source/target IPs, and spread frequency. The VDS mirrors network traffic to a detection engine in real-time without needing to reassemble packets into files. This allows it to efficiently detect viruses directly in network packets or data streams on gigabit-speed networks.
This document discusses botnets and their applications. It begins with an overview of botnets, how they are controlled through command and control servers, and how rootkits can help conceal botnet activity. It then explores how botnets can be used for spam, phishing, click fraud, identity theft, and distributed denial-of-service attacks. Detection and mitigation techniques are also summarized, including network intrusion detection, honeynets, DNS monitoring, and modeling botnet propagation across timezones. Recent botnets like AgoBot, PhatBot, and Bobax are also examined in the context of spam distribution. Open research questions around botnet membership detection, click fraud detection, and phishing detection are presented.
Bot software spreads, causes new worriesUltraUploader
Bot software infects millions of computers worldwide without the owners' knowledge and turns them into zombies that perform malicious tasks as part of a bot network. These bot networks, which can include thousands of infected computers, are used to spread viruses and worms, send spam emails, install spyware, and launch denial-of-service attacks. While initially just an automated way to spread malware, bot networks are now also used for criminal activities like identity theft due to their ability to stealthily command a large number of compromised computers. Security experts warn that the proliferation of bot networks poses serious risks and is very difficult to stop given their automation and scale.
Blended attacks exploits, vulnerabilities and buffer overflow techniques in c...UltraUploader
The document discusses blended threats that combine exploits and vulnerabilities with computer viruses. It begins with definitions of blended attacks and buffer overflows. It then describes three generations of buffer overflow techniques as well as other vulnerabilities exploited by blended threats, such as URL encoding and MIME header parsing. The document also discusses past threats like the Morris worm and CodeRed that blended exploits with viruses, and techniques used to combat future blended threats through defense in depth.
Win32/Blaster was a worm that exploited a vulnerability in Windows RPC to infect systems running Windows 2000 and Windows XP. It installed itself to automatically run on startup and then attempted to infect other systems on the local network and randomly selected IP addresses. The infection process involved exploiting the RPC vulnerability to execute a remote shell, downloading the worm binary, and executing it. It also launched a SYN flooding DDoS attack against Windows Update sites each month after the 16th. The worm spread quickly after the vulnerability was disclosed and highlighted the increasing automation and harm of worms.
Bird binary interpretation using runtime disassemblyUltraUploader
The document describes BIRD (Binary Interpretation using Runtime Disassembly), a binary analysis and instrumentation infrastructure for the Windows/x86 platform. BIRD combines static and dynamic disassembly to guarantee that every instruction in a binary is analyzed before execution. It provides services to convert binary code to assembly and insert instrumentation code without affecting program semantics. The prototype took 12 student months to develop and can successfully analyze applications like Microsoft Office, Internet Explorer, and IIS with low overhead of below 4%.
Biologically inspired defenses against computer virusesUltraUploader
This document discusses two biologically inspired approaches to computer virus detection and removal: a neural network virus detector that learns to identify infected and uninfected programs, and a computer immune system that can automatically identify, analyze, and remove new viruses from a system. The neural network technique has been incorporated into an IBM commercial antivirus product, while the computer immune system is still in prototype form. Both aim to replace human analysis of viruses to allow faster response times needed to address increasing rates of new virus creation and spread.
1. The document discusses biological viruses and computer viruses, providing background on how biological viruses work by hijacking cellular mechanisms of DNA replication, transcription and translation. It defines a computer virus as a piece of code with self-replicating ability that relies on other programs to exist, similar to biological viruses. 2. Computer viruses can cause damage by infecting programs which then infect other programs, potentially spreading like an epidemic across connected computers. 3. The document argues that a better understanding of biological and computer mechanisms can help improve defenses against viruses.
Biological aspects of computer virologyUltraUploader
This document discusses biological aspects of computer viruses and how factors that influence the spread of biological pathogens can also affect the propagation of computer malware. It analyzes three major factors that influence the spread of a computer worm: the infection propagator, which examines characteristics of exploited vulnerabilities like prevalence and age; the target locator, which focuses on how worms find new targets; and the worm's virulence, which looks at aspects that increase its infectiousness. The document suggests studying computer virus propagation through the lens of epidemiology models used for infectious diseases.
Biological models of security for virus propagation in computer networksUltraUploader
This document discusses how biological models of disease propagation and defense mechanisms in living organisms can inspire new approaches to computer network security and virus detection. Specifically, it describes how genetic regulatory networks that turn off harmful genes, protein interaction networks that model cellular processes, and epidemiological models of disease spread can provide models for automatically detecting and containing computer viruses without relying solely on pre-defined virus signatures. The authors propose several new security models drawing on these biological analogies, such as using surrogate code to maintain system functionality when parts are shut off, modeling network interactions to determine how viruses propagate, and evolving network services in real-time to reconstitute functionality after attacks.