This document discusses computer security risks. It defines computer security risks as events that could cause loss or damage to computer systems. It identifies several types of security risks, including internet and network attacks like malware, botnets, denial of service attacks and spoofing. It also discusses unauthorized access and use, hardware and software theft, information theft, and system failures. Malware types like viruses, worms, Trojan horses, rootkits, and spyware are explained in detail.
The document discusses hacking and viruses, providing definitions and types of each. It defines hacking as unauthorized computer and network use and outlines ethical versus unethical hacking. Unethical hacking is illegal and done for fun, money or blackmail while ethical hacking tests security systems. The document also defines viruses as self-replicating malware that causes harm and discusses symptoms, types of viruses including Trojans and worms, and prevention methods like updating antivirus software and avoiding unknown files. Popular antivirus programs and some user misunderstandings are also mentioned.
Computer viruses are programs that infect computers without permission. The first virus, called Creeper, was created in 1971 and spread via ARPANET. Viruses can slow computers, cause crashes, and delete files. Common ways to get viruses include opening infected email attachments, visiting malicious websites, and downloading untrusted files. Antivirus software scans for and removes viruses, but must be kept up to date to defend against new threats. Over 6,000 new viruses are created each month, so vigilance is important to avoid infection.
This Presentation explains about Firewalls, Viruses and Antiviruses. I hope this presentation may help you in understanding about Viruses, Firewall and Antiviruses Software.
This document provides an overview of Free Libre Open Source Software (FLOSS) development. It discusses what FLOSS is, why to use and develop FLOSS, and how FLOSS is developed. FLOSS development is described as an open, collaborative process done within communities internationally. Developers work together decentralizedly using tools like mailing lists, version control systems, and bug trackers. New contributors start by engaging with communities, submitting issues and patches. Community leadership focuses on meritocracy, autonomy, and delegating tasks. Challenges to Cuban participation include internet access and license decisions, but these may be addressed through solutions.
Security Awareness related to common malwares, (viruses, trojans, worms etc) the damages they cause and basic countermeasures one can adopt to protect against them.
A virus is a computer program that can copy itself and infect a computer without the user's permission or knowledge. There are 5 main types of viruses: macro, boot sector, network, logic bomb, and worm. An antivirus is a security program installed on a computer to protect it from viruses. Popular antivirus software includes K7, Kaspersky, Quickheal, and Avast Norton. A firewall protects a computer when connected to a network. Hackers break into computers to change data without permission, while crackers break in but do not change data. Freeware is free programming offered for download and use. An operating system acts as an interface between the user and computer, with examples including Windows XP, 7, 8,
The document discusses the history and types of computer viruses. It describes how the first computer virus, called Creeper, was detected in the early 1970s and initially spread via removable media like floppy disks before networks. It outlines different types of viruses like Trojan horses, worms, and email viruses. The document also discusses specific viruses like Melissa and Love Bug and their impacts. It notes that antivirus software uses techniques like signature-based detection, sandboxing, and heuristics to identify viruses. It emphasizes the importance of regularly updating antivirus software and scanning removable drives for prevention.
This document discusses computer security risks. It defines computer security risks as events that could cause loss or damage to computer systems. It identifies several types of security risks, including internet and network attacks like malware, botnets, denial of service attacks and spoofing. It also discusses unauthorized access and use, hardware and software theft, information theft, and system failures. Malware types like viruses, worms, Trojan horses, rootkits, and spyware are explained in detail.
The document discusses hacking and viruses, providing definitions and types of each. It defines hacking as unauthorized computer and network use and outlines ethical versus unethical hacking. Unethical hacking is illegal and done for fun, money or blackmail while ethical hacking tests security systems. The document also defines viruses as self-replicating malware that causes harm and discusses symptoms, types of viruses including Trojans and worms, and prevention methods like updating antivirus software and avoiding unknown files. Popular antivirus programs and some user misunderstandings are also mentioned.
Computer viruses are programs that infect computers without permission. The first virus, called Creeper, was created in 1971 and spread via ARPANET. Viruses can slow computers, cause crashes, and delete files. Common ways to get viruses include opening infected email attachments, visiting malicious websites, and downloading untrusted files. Antivirus software scans for and removes viruses, but must be kept up to date to defend against new threats. Over 6,000 new viruses are created each month, so vigilance is important to avoid infection.
This Presentation explains about Firewalls, Viruses and Antiviruses. I hope this presentation may help you in understanding about Viruses, Firewall and Antiviruses Software.
This document provides an overview of Free Libre Open Source Software (FLOSS) development. It discusses what FLOSS is, why to use and develop FLOSS, and how FLOSS is developed. FLOSS development is described as an open, collaborative process done within communities internationally. Developers work together decentralizedly using tools like mailing lists, version control systems, and bug trackers. New contributors start by engaging with communities, submitting issues and patches. Community leadership focuses on meritocracy, autonomy, and delegating tasks. Challenges to Cuban participation include internet access and license decisions, but these may be addressed through solutions.
Security Awareness related to common malwares, (viruses, trojans, worms etc) the damages they cause and basic countermeasures one can adopt to protect against them.
A virus is a computer program that can copy itself and infect a computer without the user's permission or knowledge. There are 5 main types of viruses: macro, boot sector, network, logic bomb, and worm. An antivirus is a security program installed on a computer to protect it from viruses. Popular antivirus software includes K7, Kaspersky, Quickheal, and Avast Norton. A firewall protects a computer when connected to a network. Hackers break into computers to change data without permission, while crackers break in but do not change data. Freeware is free programming offered for download and use. An operating system acts as an interface between the user and computer, with examples including Windows XP, 7, 8,
The document discusses the history and types of computer viruses. It describes how the first computer virus, called Creeper, was detected in the early 1970s and initially spread via removable media like floppy disks before networks. It outlines different types of viruses like Trojan horses, worms, and email viruses. The document also discusses specific viruses like Melissa and Love Bug and their impacts. It notes that antivirus software uses techniques like signature-based detection, sandboxing, and heuristics to identify viruses. It emphasizes the importance of regularly updating antivirus software and scanning removable drives for prevention.
A computer virus is a malicious program that can replicate itself and spread from one computer to another without permission. The first known computer virus was called "Brain", discovered in 1986. It infected the boot sector of floppy disks and hard drives, overwriting the master boot record so that the virus's code would run whenever the computer was booted up. Modern antivirus software aims to detect and remove viruses and other malware threats from computers.
This document defines network and information security and discusses various threats. It defines security as protecting systems, hardware, information and data. It outlines the principles of confidentiality, integrity and availability. It describes passive attacks like traffic analysis and active attacks like masquerading, replay and denial of service. It discusses vulnerabilities like malicious software, trap doors, logic bombs, Trojan horses, viruses and worms. It provides details on each of these threats and ways to prevent infections from malicious software.
A computer virus is a program that can copy itself and infect a computer without permission by attaching itself to other programs. Viruses can damage data files, corrupt firmware, display unwanted messages, and cause computers to restart unexpectedly. Worms are similar but can spread autonomously between computers without needing to be part of another program. Both viruses and worms can severely slow down computer and network performance and access sensitive information. It is important to use antivirus software, avoid opening attachments from unknown senders, and not execute downloaded files before scanning them.
Network security threats are increasing as more people and devices connect to networks. The document identifies ten major network security threats: viruses and worms, Trojan horses, spam, phishing, packet sniffers, maliciously coded websites, password attacks, hardware loss and data fragments, shared computers, and zombie computers/botnets. Each threat is described and potential solutions are provided, such as using security software to block viruses, encryption to prevent packet sniffing, and intrusion prevention systems to counter botnets. Network security managers face ongoing challenges due to the variety of threats and lack of solutions for some issues like password attacks.
Malicious code, such as viruses and worms, can attach themselves to programs and spread by modifying other programs as they run. They can cause harm by deleting files, displaying messages, or preventing systems from booting properly. Viruses embed themselves in target programs by overwriting code, changing file pointers, or inserting themselves in boot sectors or memory-resident programs. They are able to spread through networks or by infecting files shared between systems. Viruses can be detected by analyzing their code storage and execution patterns, or how they transmit from one system to another.
The document discusses computer and network security threats. It covers several types of threats including passive threats like interception and traffic analysis, and active threats such as masquerade attacks, message modification, and denial-of-service attacks. The document also discusses vulnerabilities, different forms of malware like viruses, worms, Trojan horses, and spyware, as well as common network security attacks and the assets they can target. Network security aims to protect the confidentiality, integrity, and availability of data on a network.
The document discusses various topics related to computer and network security including:
- Analysis from 2014 and 2016 revealed an increasing number of malicious cyber attacks and new malware being created daily.
- Cyber attacks cost the UK economy £27 billion per year according to one report, while another survey found UK firms lost £34.1 billion in one year from security incidents.
- Over 1.8 billion web accounts have been hacked according to one website that tracks data breaches. The document provides information on tools and techniques that can be used to hack websites, intercept communications, conduct surveillance and engage in social engineering. It also discusses types of malware like viruses, worms and trojans as well as methods of protection.
This document discusses computer security threats and solutions. It describes how computers can become insecure if data is not trustworthy or behaves unexpectedly. Common threats include viruses, worms, Trojan horses, spyware, adware, spamming, and PC intrusion. Viruses can damage or delete files, slow computers down, and invade email programs. Spyware and adware track user activities and display unwanted pop-up ads. Spamming disrupts email delivery through bulk messages. Hackers also try to intrude PCs. The document recommends both active protection methods like antivirus software and preventative measures like updating systems and using caution online to secure computers against these threats.
Types of malicious software and remediesManish Kumar
Malware comes in many forms, including viruses, worms, spyware, Trojan horses, and more. Viruses can replicate and spread, worms self-replicate to use system resources, and spyware collects user data without permission. Rootkits conceal running processes and files to maintain unauthorized access. It is important to use antivirus software, keep systems updated, avoid suspicious emails/links, and be wary of unauthorized programs.
Viruses and spyware can infect computers through email attachments, websites, and removable drives. Viruses spread software without permission and spyware monitors users' activities. Adware displays unwanted pop-up ads through programs that claim to do one thing but do another. Users can avoid malware by practicing common sense online safety like avoiding random website clicks, not installing unknown software, and running regular antivirus scans.
Computer viruses have existed since the early 1980s. Some key events in virus history include the first Apple viruses in 1981, Fred Cohen's seminal research in the 1980s, the first memory resident virus called Lehigh in 1987, and the release of the first antivirus software in 1988. Major viruses that caused widespread damage include Melissa in 1999, I Love You in 2000, Code Red in 2001, and Slammer in 2003. To prevent virus infections, it is important to keep systems and software updated, use antivirus software, be wary of unknown attachments, and verify any security alerts before taking action.
This document discusses 10 major network security threats and their solutions. The threats are viruses and worms, Trojan horses, spam, phishing, packet sniffers, maliciously coded websites, password attacks, hardware loss and residual data fragments, shared computers, and zombie computers/botnets. Viruses and worms can spread across an entire network and damage all connected computers. Trojan horses and packet sniffers can also obtain sensitive personal information from a network. Phishing targets amateur network users, while password attacks exploit weak login credentials. Implementing security software, encryption, and unique passwords can help mitigate these threats.
Simon Pell gave a presentation on malware threats facing small businesses. He defined different types of malware like viruses, trojans, worms, and rootkits. Viruses self-replicate and infect files, while trojans and worms do not self-replicate but can still damage files. Rootkits are used to hide other malware. Spyware/adware collects user information without consent. Cookies are small text files that store website preferences. Pell stressed the importance of using updated antivirus software, firewalls, and being cautious of downloads. Firewalls can control network access and applications without slowing performance. Unified threat management provides additional protections like blocking suspicious websites and spam.
Adware is a type of malware that displays unwanted advertisements through pop-up windows and changes to browsers. It can be installed through free software or security vulnerabilities and is often used to collect personal information. Symptoms of adware include unexpected ads and pop-ups. To remove adware, users should back up files, scan their device with antivirus software containing an adware removal tool, and use antivirus software to prevent future infections.
This document discusses network security basics. It covers networking threats like hackers and social engineering. Methods of attack include viruses, worms, and Trojan horses. The importance of security policies, keeping software updated, using antivirus software and firewalls are explained. Firewalls can use techniques like packet filtering, application filtering and stateful packet inspection to control network access and detect attacks. Finally, the document thanks the reader for their attention and welcomes questions.
This document defines and describes computer worms. It notes that worms are a type of malicious software that spreads to infect other computers without user interaction by exploiting vulnerabilities. It provides examples of different types of worms like email worms and bot worms. The document explains how worms spread and differ from viruses, noting worms can replicate independently while viruses typically require human interaction. It concludes by recommending measures to prevent worm infections like keeping software updated, using firewalls and antivirus, and being cautious of email attachments.
Network and Security | by M.Hassaan AnjumHassaan Anjum
This document discusses various types of computer security threats such as viruses, spyware, phishing, and cyber vandalism. It provides details on different types of computer viruses like boot sector viruses, program file viruses, multipartite viruses, polymorphic viruses, network viruses, macro viruses, and spacefiller viruses. The document also outlines some methods of preventing computer virus attacks like using antivirus software, firewalls, virtual private networks (VPNs), and secure network authentication. Authentication methods like passwords, two-factor authentication, biometrics, and CAPTCHAs are explained.
1.What is computer virus?
2.About Virus.
3.Technology
the computer virus is the major thing that is slowdown our pc or laptops thats why we try to remve virus with the help of antivirus...
The document discusses computer security threats and solutions. It describes threats such as viruses, worms, trojans, spyware, adware, spamming, and hacking. Viruses can damage or delete files, slow down the computer, and invade email. Spyware tracks user activities while adware delivers unwanted pop-ups. Spamming sends bulk emails that clog servers. Hacking enables intruders to delete data or deny access. Solutions include using antivirus software, updating systems, caution when downloading, and firewalls to protect against threats actively and through prevention.
A computer virus is a malicious program that can replicate itself and spread from one computer to another without permission. The first known computer virus was called "Brain", discovered in 1986. It infected the boot sector of floppy disks and hard drives, overwriting the master boot record so that the virus's code would run whenever the computer was booted up. Modern antivirus software aims to detect and remove viruses and other malware threats from computers.
This document defines network and information security and discusses various threats. It defines security as protecting systems, hardware, information and data. It outlines the principles of confidentiality, integrity and availability. It describes passive attacks like traffic analysis and active attacks like masquerading, replay and denial of service. It discusses vulnerabilities like malicious software, trap doors, logic bombs, Trojan horses, viruses and worms. It provides details on each of these threats and ways to prevent infections from malicious software.
A computer virus is a program that can copy itself and infect a computer without permission by attaching itself to other programs. Viruses can damage data files, corrupt firmware, display unwanted messages, and cause computers to restart unexpectedly. Worms are similar but can spread autonomously between computers without needing to be part of another program. Both viruses and worms can severely slow down computer and network performance and access sensitive information. It is important to use antivirus software, avoid opening attachments from unknown senders, and not execute downloaded files before scanning them.
Network security threats are increasing as more people and devices connect to networks. The document identifies ten major network security threats: viruses and worms, Trojan horses, spam, phishing, packet sniffers, maliciously coded websites, password attacks, hardware loss and data fragments, shared computers, and zombie computers/botnets. Each threat is described and potential solutions are provided, such as using security software to block viruses, encryption to prevent packet sniffing, and intrusion prevention systems to counter botnets. Network security managers face ongoing challenges due to the variety of threats and lack of solutions for some issues like password attacks.
Malicious code, such as viruses and worms, can attach themselves to programs and spread by modifying other programs as they run. They can cause harm by deleting files, displaying messages, or preventing systems from booting properly. Viruses embed themselves in target programs by overwriting code, changing file pointers, or inserting themselves in boot sectors or memory-resident programs. They are able to spread through networks or by infecting files shared between systems. Viruses can be detected by analyzing their code storage and execution patterns, or how they transmit from one system to another.
The document discusses computer and network security threats. It covers several types of threats including passive threats like interception and traffic analysis, and active threats such as masquerade attacks, message modification, and denial-of-service attacks. The document also discusses vulnerabilities, different forms of malware like viruses, worms, Trojan horses, and spyware, as well as common network security attacks and the assets they can target. Network security aims to protect the confidentiality, integrity, and availability of data on a network.
The document discusses various topics related to computer and network security including:
- Analysis from 2014 and 2016 revealed an increasing number of malicious cyber attacks and new malware being created daily.
- Cyber attacks cost the UK economy £27 billion per year according to one report, while another survey found UK firms lost £34.1 billion in one year from security incidents.
- Over 1.8 billion web accounts have been hacked according to one website that tracks data breaches. The document provides information on tools and techniques that can be used to hack websites, intercept communications, conduct surveillance and engage in social engineering. It also discusses types of malware like viruses, worms and trojans as well as methods of protection.
This document discusses computer security threats and solutions. It describes how computers can become insecure if data is not trustworthy or behaves unexpectedly. Common threats include viruses, worms, Trojan horses, spyware, adware, spamming, and PC intrusion. Viruses can damage or delete files, slow computers down, and invade email programs. Spyware and adware track user activities and display unwanted pop-up ads. Spamming disrupts email delivery through bulk messages. Hackers also try to intrude PCs. The document recommends both active protection methods like antivirus software and preventative measures like updating systems and using caution online to secure computers against these threats.
Types of malicious software and remediesManish Kumar
Malware comes in many forms, including viruses, worms, spyware, Trojan horses, and more. Viruses can replicate and spread, worms self-replicate to use system resources, and spyware collects user data without permission. Rootkits conceal running processes and files to maintain unauthorized access. It is important to use antivirus software, keep systems updated, avoid suspicious emails/links, and be wary of unauthorized programs.
Viruses and spyware can infect computers through email attachments, websites, and removable drives. Viruses spread software without permission and spyware monitors users' activities. Adware displays unwanted pop-up ads through programs that claim to do one thing but do another. Users can avoid malware by practicing common sense online safety like avoiding random website clicks, not installing unknown software, and running regular antivirus scans.
Computer viruses have existed since the early 1980s. Some key events in virus history include the first Apple viruses in 1981, Fred Cohen's seminal research in the 1980s, the first memory resident virus called Lehigh in 1987, and the release of the first antivirus software in 1988. Major viruses that caused widespread damage include Melissa in 1999, I Love You in 2000, Code Red in 2001, and Slammer in 2003. To prevent virus infections, it is important to keep systems and software updated, use antivirus software, be wary of unknown attachments, and verify any security alerts before taking action.
This document discusses 10 major network security threats and their solutions. The threats are viruses and worms, Trojan horses, spam, phishing, packet sniffers, maliciously coded websites, password attacks, hardware loss and residual data fragments, shared computers, and zombie computers/botnets. Viruses and worms can spread across an entire network and damage all connected computers. Trojan horses and packet sniffers can also obtain sensitive personal information from a network. Phishing targets amateur network users, while password attacks exploit weak login credentials. Implementing security software, encryption, and unique passwords can help mitigate these threats.
Simon Pell gave a presentation on malware threats facing small businesses. He defined different types of malware like viruses, trojans, worms, and rootkits. Viruses self-replicate and infect files, while trojans and worms do not self-replicate but can still damage files. Rootkits are used to hide other malware. Spyware/adware collects user information without consent. Cookies are small text files that store website preferences. Pell stressed the importance of using updated antivirus software, firewalls, and being cautious of downloads. Firewalls can control network access and applications without slowing performance. Unified threat management provides additional protections like blocking suspicious websites and spam.
Adware is a type of malware that displays unwanted advertisements through pop-up windows and changes to browsers. It can be installed through free software or security vulnerabilities and is often used to collect personal information. Symptoms of adware include unexpected ads and pop-ups. To remove adware, users should back up files, scan their device with antivirus software containing an adware removal tool, and use antivirus software to prevent future infections.
This document discusses network security basics. It covers networking threats like hackers and social engineering. Methods of attack include viruses, worms, and Trojan horses. The importance of security policies, keeping software updated, using antivirus software and firewalls are explained. Firewalls can use techniques like packet filtering, application filtering and stateful packet inspection to control network access and detect attacks. Finally, the document thanks the reader for their attention and welcomes questions.
This document defines and describes computer worms. It notes that worms are a type of malicious software that spreads to infect other computers without user interaction by exploiting vulnerabilities. It provides examples of different types of worms like email worms and bot worms. The document explains how worms spread and differ from viruses, noting worms can replicate independently while viruses typically require human interaction. It concludes by recommending measures to prevent worm infections like keeping software updated, using firewalls and antivirus, and being cautious of email attachments.
Network and Security | by M.Hassaan AnjumHassaan Anjum
This document discusses various types of computer security threats such as viruses, spyware, phishing, and cyber vandalism. It provides details on different types of computer viruses like boot sector viruses, program file viruses, multipartite viruses, polymorphic viruses, network viruses, macro viruses, and spacefiller viruses. The document also outlines some methods of preventing computer virus attacks like using antivirus software, firewalls, virtual private networks (VPNs), and secure network authentication. Authentication methods like passwords, two-factor authentication, biometrics, and CAPTCHAs are explained.
1.What is computer virus?
2.About Virus.
3.Technology
the computer virus is the major thing that is slowdown our pc or laptops thats why we try to remve virus with the help of antivirus...
The document discusses computer security threats and solutions. It describes threats such as viruses, worms, trojans, spyware, adware, spamming, and hacking. Viruses can damage or delete files, slow down the computer, and invade email. Spyware tracks user activities while adware delivers unwanted pop-ups. Spamming sends bulk emails that clog servers. Hacking enables intruders to delete data or deny access. Solutions include using antivirus software, updating systems, caution when downloading, and firewalls to protect against threats actively and through prevention.
Computers are powerful electronic devices that process data and produce outputs. They are important tools used in many fields like education, science, business, and government. Computers have revolutionized communications through the internet. Computer crimes like software piracy and computer viruses are major issues. Piracy hurts software developers while viruses can damage programs and steal data. Various protections try to prevent piracy while antivirus software helps detect and remove viruses to keep computers secure.
Computers are powerful electronic devices that process data and produce outputs. They are important tools used in many fields like education, science, business, government, and communications. Computers have transformed how we communicate through the internet and do business. Computer crimes like software piracy and computer viruses are major issues. Piracy hurts software developers while viruses can infect computers and spread in various ways like through email or infected disks. Antivirus software and keeping definitions updated can help prevent virus infections.
Computer viruses first emerged in the early 1970s as self-replicating programs called "rabbits" that occupied system resources. Some notable early viruses included Creeper in 1971 and Brain in 1986, which spread via floppy disks. In the late 1980s and 1990s, viruses increasingly spread via email with viruses like Melissa and I Love You affecting millions of systems by automatically sending themselves to others. Today, antivirus software and awareness of suspicious emails helps mitigate the spread of viruses, though new variants continue to emerge seeking to exploit vulnerabilities in systems.
Online access and computer security.pptx_S.GauthamJoelGautham
This document discusses various computer security threats such as viruses, worms, Trojans, spyware, adware, spamming, and phishing. It describes how these threats can damage computers or steal personal information. It then provides recommendations for both active protection methods like antivirus software and preventative measures like strong passwords and caution when online. Firewalls, both software and hardware, are also presented as tools to enhance computer security.
Computer viruses are programs that can copy themselves and infect computers without permission. True viruses spread when an infected computer is connected to another computer. There are different types of viruses like email viruses, Trojan horses, and worms. Viruses work by executing code and writing to memory when an infected program is launched. Some of the worst viruses in history include Melissa, ILOVEYOU, and MyDoom. People can prevent viruses by using protected operating systems, virus protection software, and avoiding unknown attachments or programs.
This document discusses the history and types of computer viruses. It begins by describing basic types of viruses like Trojan horses, worms, and email viruses. It then defines types of viruses like boot sector viruses, program viruses, multipartite viruses, and others. The document outlines some signs that a computer may be infected. It provides examples of notable viruses from the 1980s onward like the Brain virus, Melissa virus, Love Bug virus, and others. It discusses prevention methods like using antivirus software and being cautious of emails and attachments. Overall, the document provides a comprehensive overview of the development of computer viruses and methods to protect against viruses.
The document discusses network security and its importance in protecting networks and data from breaches and threats. It defines network security as involving access control, antivirus software, firewalls, encryption, and other measures. It then provides background information on security threats, both internal and external, and physical and data attacks. Types of malware like viruses, worms, and trojan horses are explained along with examples. The role of antivirus software in virus protection is also covered.
Computer crime and internet crime privacyGouthamXander
This document discusses computer crime and internet crime. It defines computer crime as any crime committed with the help of a computer. The history of computer crime is explored, from early physical damage to systems in the 1960s-1980s to modern financial crimes and malware attacks enabled by greater internet access and connectivity. Various categories of computer crime are also outlined, including computer viruses, denial of service attacks, malware, hacking, pirating, illegal trading, cyber terrorism, and pornography. Ways to protect against computer crime through anti-virus software, firewalls, and online safety are suggested.
This document provides an overview of information security and privacy topics including computer viruses, how they work and spread, common types of viruses, virus prevention, and data security issues in the United States. It defines computer viruses, explains how they are able to replicate and attach to other programs, and notes they are created by people rather than naturally occurring. Popular virus types like file infectors, boot sector viruses, Trojan horses, and worms are described. The document also covers virus symptoms, prevention methods like antivirus software and firewalls, computer crime categories, and the 1974 Privacy Act.
This document discusses information security and privacy. It begins by defining computer viruses and how they work, reproducing and attaching to other programs. It then discusses popular types of viruses like file infectors, boot sector viruses, Trojan horses, and worms. The document outlines how viruses can damage systems and be spread, as well as common symptoms. It recommends prevention methods like antivirus software and firewalls. The document concludes by covering data security issues in the US, categories of security breaches, and the Privacy Act of 1974.
This document discusses computer viruses, anti-virus software, and how to prevent virus infections. It defines a computer virus as a program designed to spread from computer to computer and interfere with operations. Viruses are spread through email attachments and downloads. The document outlines different types of viruses and malicious software like worms, spam, and trojan horses. It also describes how anti-virus software works by scanning files and memory for virus signatures. Key recommendations include using anti-virus software, keeping it updated, and exercising caution when opening attachments or downloads.
This document discusses computer viruses including how they enter computers, their effects, and how to protect against them. It begins by defining viruses and explaining how they replicate by modifying other programs. It then describes how viruses typically enter through removable media, emails, downloads and insecure websites. The main effects are reduced performance, data corruption, unusual browser activity and potential data loss. The document recommends using antivirus software, keeping systems updated, backing up data and avoiding suspicious files/emails. It provides examples of major viruses like Nimda and Code Red and concludes by emphasizing the importance of security best practices.
This document summarizes a seminar presentation on computer viruses and cyber attacks. The presentation covered the introduction and history of viruses, how viruses work and are created, types of viruses including boot sector, web scripting, and polymorphic viruses. It also discussed cyber attacks like DDoS, phishing, and man-in-the-middle attacks. The presentation explained how anti-virus software detects viruses using signature-based, heuristic-based, and behavioral-based techniques and outlines prevention methods like using firewalls and updating software.
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.
This document provides an overview of computer viruses including their history, types, symptoms, and prevention methods. It discusses how the first computer virus was created in 1981 and that now there are millions of viruses. There are eight main types of viruses that can damage systems like boot sector viruses or hijack browsers. Common symptoms of a virus include slow performance, freezing, and unauthorized program activity. The best prevention methods are installing antivirus software, keeping systems updated, avoiding suspicious attachments/websites, and not using pirated software.
This document provides an overview of computer viruses including their history, types, and signs of infection. It describes some of the earliest viruses like Creeper in the 1970s and how they primarily spread via removable media. Later viruses like Melissa and I Love You/Love Bug caused major outbreaks by spreading through email. The document also outlines different categories of viruses like worms, Trojan horses, and macro viruses, as well as techniques like polymorphism. It notes the increasing prevalence of viruses over time according to annual counts. Prevention methods like antivirus software and awareness of suspicious emails are also discussed.
Similar to Securing The Computer From Viruses ... (20)
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Assessment and Planning in Educational technology.pptxKavitha Krishnan
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
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ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
1. SECURING THE COMPUTER FROM VIRUSES
SUBMITTED TO :- SUBMITTED BY :-
Dr. Shiva Shukla Md.Mustafizur Rahman
Assistant Professor M.Ed. 2nd Semester
Department of Education Regd.No.-17mededu07
Central University of Punjab
2. Contents…
• What is a computer Virus?
• Types of Computer Virus
• Boot Sector Virus
• Multipartite Virus
• Worm Virus
• E-mail Virus
• Micro Virus
• Computer crime Security and Privacy
• Virus Precautions
• Privacy How Did They Get My Data?
• Privacy Legislation
• Prevention
• Signs Your Computer is Infected
• Computer Virus History
• How to Make Your Home Machine As Secure As at Work
• Steps to help remove a virus
• Total Number of virus by year
• Password Security
3. What is a Computer Virus?
• A Computer Virus is a computer program that can
copy itself and infect a computer without the
permission or knowledge of the user.
• A computer Virus can only spread from one computer
to another when its host is taken to the uninfected
computer, for instance by a user Sending it over a
network or the internet, or by carrying it on a
removable medium such as a floppy disk Cd , or USB
drive.
5. Boot Sector Virus
It is a Computer Virus designed to infect the boot
of the disk. It modifies or replaces the executable
program in the boot Sector of the disk preventing
the computer from being able to boot or start up.
Eg. Disk Killer , Danish boot etc.
6. Multipartite Virus
A hybrid of Boot Program / file Viruses. They
infect program files and when the infect the boot
record. When you boot the computer next time
the virus from the boot record loads in memory
and then start infecting other program files on
disk.
Eg. Invader, tequila etc.
7. Worm Virus
■ A Computer Worm is a Self-replicating computer
program. It uses a network to send copies of itself
to other nodes computer terminals on the network
and it may do so without any user intervention. It
always cause harm to the network, if only by
consuming bandwidth.
Eg. Badtrans, Brontok etc.
8. E-mail Virus
In Some attachments, Virus are hidden and you
Should have a virus scanner before you double So if
there is virus I the attachment, it would either won’t
let it open or make Sure the virus is eliminated
before opening.
E.g. ILOVEYou etc.
9. Macro Virus
A Macro Virus is associated with application
Software like Word and excel. When opening the
infected document, macro Virus loaded into main
memory and destroys the data Stored in hard disk.
Eg. Relax, Melissa, A and Bablas, W97m etc.
10. Computer Crime Security and Privacy
Data communications capabilities provides new challenges
• Accidental damage
• Destruction
• Espionage
Keep data
secure
• Medical information
• Salaries
• Bank balances
Keep data
private
11. Virus Precautions
Be wary of free software from the Internet
or friends
Only install programs from diskettes in
sealed packages
Use virus-scanning software to check any
file or document before loading it onto
your hard disk
12. Privacy How Did They Get My Data?
• Loans
• Orders via mail
• Magazine subscriptions
• Tax forms
• Applications for schools, jobs, clubs
• Hospital stay
• Advertisers
• Military draft registration
13. Privacy Legislation
Fair Credit Reporting
Act – 1970
Freedom of
Information Act –
1970
Federal Privacy Act –
1974
Video Privacy Protection act –
1988
Computer Matching and Privacy
Protections Act – 1988
14. Prevention
• Use antivirus software
• Be aware of the e-mails and attachments
you open
• Check for updates on antivirus software
regularly
• Make sure antivirus software is installed
correctly
15. Signs Your Computer is Infected
• Functions slower than normal
• Responds slowly and freezes often
• Restarts itself often
• See uncommon error messages,
distorted menus, and dialog boxes
• Notice applications fail to work
correctly
• Fail to print correctly
16. Computer Virus History
First half of the 70'Late 60,s, early 70,s- "Rabbits" cloned themselves occupied system resources,
slowing down the productivity.
-"The Creeper" capable of entering a network by itself and transferring a copy of itself to the
system.
Early 80,s-Increasing number of programs written by individuals not by software companies.
Programs caused miner viruses called "Trojan horses".
1986'Brain virus' - by Amjad and Basit Farooq Alvi.
- spread through floppy disks,
- infected boot records and not computer hard drives
17. Computer Virus History
Lahore, Pakistani Brain, Brain-A and UIUC virus
-took over free space on the floppy disk and hid from detection
”disguised itself by displaying the uninfected boot sector on the disk.”
1987-Lehigh virus
- the first memory resident file infector that attacked executable files and took control when a
file was opened
The Jerusalem Virus
-had bugs that re-infected programs that were already infected
1988: Robert Morris made a worm that invaded ARPANET computers
- disabled 6,000 computers on the network by overflowing their memory banks with copies of
itself
1991: Norton Anti-Virus software
1999: "Melissa" virus
18. Contd…
- infected thousands of computers very fast by sending copies of itself to 50 names in the address
book on Outlook e-mail
- Led to an estimated $80 million in damage and record sales of anti-virus products.
2000: "I Love You" virus
- was sent by email and infected 10 % of computers in only one day
- created by a young Filipino computer student who did not get punished because then the
Philippines had no laws against hacking which led to the European Union's global
Cybercrime Treaty.
2001: "Nimda" virus (days after 9/11)
- had 5 ways of infecting systems
2004
– My Doom spreads through emails and file-sharing software faster than any previous virus or
worm.
– Allows hackers to access the hard drive of the infected computer.
– An estimated one million computers running Windows are affected by the fast-spreading
Sasser computer worm.
19. Contd…
The worm does not cause irreparable harm to computers or data, but it does slow computers
and cause some to quit or reboot without explanation.
2006
– Discovery of the first-ever malware trojan horse for Mac OS X
2008
– Torpig is a Trojan horse which affects Windows, turning off anti-virus applications.
■ It allows others to access the computer, modifies data, steals confidential information
and installs malware on the victim's computer.
2009
– Conficker infects anywhere from 9 to 15 million Microsoft server systems.
– French air force, Royal Navy warships and submarines, Sheffield Hospital
network, UK Ministry of Defence, German Bundeswehr and Norwegian Police
were all affected.
20. Total Number of Viruses by year
1985 2
1987 3
1989 6
1990 142
1991 357
1992 1,161
1993 2,482
1994 3,687
1995 5,626
1996 7,764
1997 11,037
1998 16,726
1999 40,850
2000 44,000
2001 48,000
2002 55,000
2003 62,000
21. How to Make Your Home Machine As Secure As at Work
• Make sure your computer has good strong passwords
• Passwords should not be dictionary words and should consist of 7+
characters of mixed case including numbers, letters, and symbols.
• Patch your machine regularly
• Install an anti-spyware product
• Use an anti-virus product and update it regularly
• Use a router-based firewall Know what is running on your system
• Use good internet hygiene
23. Steps to help remove a virus
• Visit web site 4 Update and install the latest updates.
• If you currently use antivirus software, visit the manufacturer's Web site,
update your software, and then perform a thorough scan of your computer.
If you don't use antivirus software, subscribe to a service and scan your
computer immediately.
• Download, install, and run the Malicious Software Removal Tool (for
Microsoft Windows XP or Windows 2000 users).