Ransomware has become a lucrative criminal enterprise, with cyber criminals extorting over $209 million from organizations in just the first three months of 2016 alone. Ransomware works by encrypting files on infected machines and demanding ransom payments in exchange for the decryption key. While early ransomware dated back to 2005, the threat grew significantly in 2015 with over 400,000 infections and $325 million stolen. Ransomware variants now aim to disrupt device usage until payment is made. Organizations can help mitigate the risk of ransomware through practices like regular backups, keeping software updated, limiting user privileges, and restricting unknown applications.
Just as the title says, we go over the humble origins, touch on the notable variants of yesteryear, the big hitters of today, and discuss the future of ransomware. It's no longer just for windows anymore. Linux, Mac and Mobile platforms are all ripe for extortion.
This humorous and entertaining talk teaches everyone, from Mom and Pops to large enterprise organizations what's really happening and how to protect themselves.
Ransomware has evolved significantly since 2012, starting as police messages and becoming increasingly sophisticated with encryption and evasion techniques. Ransomware distributors now offer ransomware-as-a-service and use affiliate programs to spread malware via phishing emails and drive-by downloads. Victims' files are encrypted with strong encryption keys while private keys remain with criminal operators, who demand ransom payments in cryptocurrency. Effective defenses include education, backups, layered protection, network segmentation, and application control to limit the impact of ransomware attacks.
Hospitals, school districts, state and local governments, law enforcement agencies, small businesses, large businesses—these are just some of the entities impacted recently by ransomware, an insidious type of malware that encrypts, or locks, valuable digital files and demands a ransom to release them. And, of course, home computers are just as susceptible to ransomware, and the loss of access to personal and often irreplaceable items—including family photos, videos, and other data—can be devastating for individuals as well.
Ransomware encrypts files on infected devices and demands ransom payments in cryptocurrency for the decryption key. It has become a global epidemic. There are two main types: locker ransomware which locks access to devices, and crypto ransomware which encrypts valuable files. Ransomware uses techniques like exploit kits, malicious ads/emails, and affiliate networks to spread. It encrypts files using symmetric and asymmetric encryption. Payments are typically demanded in cryptocurrency like Bitcoin. Mitigation strategies include backups, antivirus software, and network protections. A proposed solution is a cloud-based malware scanning system for remote detection and response.
This presentation is about Ransomware. It tells you about how ransomware creates problem and how it can be removed. It also describes different types of Ransomware.
Ransomware has evolved significantly since the AIDS Trojan in 1989. Nowadays, ransomware encrypts users' files and demands ransom payments in cryptocurrency to decrypt them. There are two main types: locker ransomware that denies computer access, and crypto ransomware that encrypts files. Notable ransomware variants discussed include CryptoLocker (2013), Cryptowall (2014), TorrentLocker (2014), KeRanger (2016 Mac), Locky (2016), and the new "ransomware as a service" called Ransom32. Future threats may target infrastructure, cloud services, hardware, and corporate networks. The IC3 has received over $57 million in ransomware damages since 2005, with
Ransomware encrypts personal files on an infected computer and demands payment of a ransom to recover access to the files. Variants like CryptoLocker encrypt files thoroughly while also spreading throughout network shares. Authorities advise against paying ransoms, as it only encourages further criminal behavior. To remove ransomware and prevent future infections, users should use anti-virus software, keep backups of important files offline, and practice safe browsing and networking habits. Regular software updates and limiting administrator privileges also reduces infection risks.
Just as the title says, we go over the humble origins, touch on the notable variants of yesteryear, the big hitters of today, and discuss the future of ransomware. It's no longer just for windows anymore. Linux, Mac and Mobile platforms are all ripe for extortion.
This humorous and entertaining talk teaches everyone, from Mom and Pops to large enterprise organizations what's really happening and how to protect themselves.
Ransomware has evolved significantly since 2012, starting as police messages and becoming increasingly sophisticated with encryption and evasion techniques. Ransomware distributors now offer ransomware-as-a-service and use affiliate programs to spread malware via phishing emails and drive-by downloads. Victims' files are encrypted with strong encryption keys while private keys remain with criminal operators, who demand ransom payments in cryptocurrency. Effective defenses include education, backups, layered protection, network segmentation, and application control to limit the impact of ransomware attacks.
Hospitals, school districts, state and local governments, law enforcement agencies, small businesses, large businesses—these are just some of the entities impacted recently by ransomware, an insidious type of malware that encrypts, or locks, valuable digital files and demands a ransom to release them. And, of course, home computers are just as susceptible to ransomware, and the loss of access to personal and often irreplaceable items—including family photos, videos, and other data—can be devastating for individuals as well.
Ransomware encrypts files on infected devices and demands ransom payments in cryptocurrency for the decryption key. It has become a global epidemic. There are two main types: locker ransomware which locks access to devices, and crypto ransomware which encrypts valuable files. Ransomware uses techniques like exploit kits, malicious ads/emails, and affiliate networks to spread. It encrypts files using symmetric and asymmetric encryption. Payments are typically demanded in cryptocurrency like Bitcoin. Mitigation strategies include backups, antivirus software, and network protections. A proposed solution is a cloud-based malware scanning system for remote detection and response.
This presentation is about Ransomware. It tells you about how ransomware creates problem and how it can be removed. It also describes different types of Ransomware.
Ransomware has evolved significantly since the AIDS Trojan in 1989. Nowadays, ransomware encrypts users' files and demands ransom payments in cryptocurrency to decrypt them. There are two main types: locker ransomware that denies computer access, and crypto ransomware that encrypts files. Notable ransomware variants discussed include CryptoLocker (2013), Cryptowall (2014), TorrentLocker (2014), KeRanger (2016 Mac), Locky (2016), and the new "ransomware as a service" called Ransom32. Future threats may target infrastructure, cloud services, hardware, and corporate networks. The IC3 has received over $57 million in ransomware damages since 2005, with
Ransomware encrypts personal files on an infected computer and demands payment of a ransom to recover access to the files. Variants like CryptoLocker encrypt files thoroughly while also spreading throughout network shares. Authorities advise against paying ransoms, as it only encourages further criminal behavior. To remove ransomware and prevent future infections, users should use anti-virus software, keep backups of important files offline, and practice safe browsing and networking habits. Regular software updates and limiting administrator privileges also reduces infection risks.
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.
Internet technology and software are inherently vulnerable due to flaws, weaknesses, and gaps in their design, implementation, and security protocols. Thousands of vulnerabilities exist in both software and hardware that can be exploited by hackers if not properly addressed. Common sources of vulnerabilities include design flaws, poor security management, incorrect implementation, vulnerabilities in operating systems, applications, protocols, and ports. Ensuring systems are properly configured, passwords are strong, and users are educated can help reduce vulnerabilities, but due to the complexity of software it is impossible to have fully secure systems.
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.
The document outlines a presentation about ransomware given by Chase Cunningham, a former NSA cryptologist. The agenda includes discussing the threat landscape of ransomware, how it works through a demo, common mistakes and vulnerabilities, and tips for protecting against it. Examples of recent data breaches and cyber attacks are listed, showing hackers are highly skilled, well-funded, and the threats are growing. Ransomware is malware that locks systems and demands ransom to regain access, and has been very profitable for criminals, though protecting systems requires multilayered security and a secure provider.
Cyber extortion is a crime involving an attack or threat of attack against an enterprise, coupled with a demand for money to stop the attack.
Cyber extortions have taken on multiple forms - encrypting data and holding it hostage, stealing data and threatening exposure, and denying access to data.
Malware locks out the user’s system and demands ransom.
Creates “Zombie Computer” operated remotely.
Individuals and business targeted.
This form of extortion works on the assumption that the data is important enough to the user that they are willing to pay for recovery.
There is however no guarantee of actual recovery, even after payment is made.
The first known ransomware was the 1989 "AIDS" trojan (also known as "PC Cyborg") written by Joseph Popp.
I presented this slides in the "Privacy Protection" subject, teached by Prof. Josep Domingo-Ferrer in the Master in Computer Security Engineering and Artificial Intelligence.
Cyber crime refers to any illegal activity involving computers or networks. Early cyber crimes included the first spam email in 1978 and the first computer virus in 1982. Cyber threats have evolved from using computers as simple tools to commit crimes like cyber theft to targeting computers directly through hacking and viruses. As technology advanced, criminals began using computers as instruments to aid crimes like money laundering. Common cyber crimes today include financial crimes, IP spoofing, trojans, web jacking, session hijacking, mail bombing, and keyloggers. Cyber security tools and practices like antivirus software, firewalls, passwords, and awareness can help prevent and defend against cyber crimes.
The presentation is about Ransomware attacks. It includes
~What is Ransomware?
~History of Ransomware
~How it works?
~Types of Ransomware
~How to prevent Ransomware attacks
~Biggest Ransomware attack
~Impact of Ransomware Attacks
~Facts and figures related to Ransomware
Ransomware is a type of malware that encrypts a victim's files and demands ransom payment in order to decrypt the files. The WannaCry attack in 2017 impacted over 300,000 systems in 150 countries through ransomware. While ransomware uses strong encryption, paying the ransom is not recommended as there is no guarantee files will be recovered. It is best to backup files and keep systems updated with the latest security patches to protect against ransomware infections.
William F. Crowe presented on the cybersecurity kill chain, which models the stages of a cyber attack based on military doctrine. The model developed by Lockheed Martin includes stages of reconnaissance, weaponization, delivery, exploitation, installation, command and control, and actions on objectives. ISACA and the European Union Agency for Network and Information Security also use similar kill chain models to analyze the process of advanced persistent threats targeting critical systems and data.
This document discusses Trojans, backdoors, and other malware. It begins by explaining the origin of the term "Trojan" from the story of the Trojan horse in Greek mythology. It then defines Trojans and different types like destructive, denial of service, and remote access Trojans. The document also covers how systems can become infected, techniques for detecting and hiding malware like Trojans and backdoors, and discusses the historical Back Orifice 2000 backdoor as a case study. It concludes with recommendations for protecting against malware.
This document discusses cyber extortion and ransomware. It defines ransomware as malware that locks out a user's system and demands ransom in order to regain access. The document reviews the history of ransomware, describes famous ransomware like Reveton and CryptoLocker, and explains how ransomware works. It provides tips on how to prevent ransomware attacks and instructions for removing malware from Windows PCs.
Threat intelligence involves collecting and analyzing information about cyber attacks from sources like threat intelligence providers, public information sharing centers, and open-source intelligence. This information is used to help organizations defend against known threats. Threat research involves studying past and present threat information to identify indicators of compromise, which can provide evidence that a system has been breached and alert security teams. Common indicators include unusual outbound traffic, anomalies in privileged user accounts, activity from unusual geographic locations, and suspicious changes to device configurations.
Ransomware is malware that encrypts a victim's data and demands ransom payment in order to restore access. It typically infiltrates systems through phishing emails or infected websites and exploits existing vulnerabilities. Once installed, it encrypts target data, covers its tracks, and may spread to other devices. Paying the ransom does not guarantee restoration of data and systems. Ransomware is spreading due to readily available malware kits, use of common platforms like JavaScript that enable cross-platform attacks, and ransomware marketplaces that lower the bar for would-be attackers. Organizations can best prevent ransomware by maintaining updated systems with antivirus software, backing up data, and educating users to avoid phishing attempts.
Cyber security awareness training by cyber security infotech(csi), Information Security,
website development company,
Employee Monitoring System,
Employee Monitoring Software
The basic fundamental of cybersecurity and how can it be used for unethical purposes.
For this type of presentations (customised), you can contact me here : rishav.sadhu11@gmail.com
Malware and Anti-Malware Seminar by Benny CzarnyOPSWAT
Benny Czarny presented an introduction to malware and anti-malware to computer science students at San Francisco State University. The presentation introduced the concept of malware, types of malware, and methods for detecting malware. Benny provided examples of historical malware and illustrations of the difficulties that security vendors face in detecting threats.
The document summarizes the WannaCry/WannaCrypt ransomware attack that affected over 200,000 victims globally in May 2017. It briefly describes how the ransomware works by encrypting files and demanding ransom payments in bitcoin. It also provides details on how systems get infected, the impacts on victims including encrypted files and ransom messages, and recommendations on how to protect systems by patching vulnerabilities and using backups.
This document provides an overview of ransomware, including how it spreads, common types, and how to protect against it. Ransomware encrypts files and demands payment, usually in bitcoin, to decrypt them. It spreads mainly through spam emails containing malicious attachments or links. Common ransomware types discussed are CryptoLocker, CryptoWall, CTB-Locker, Locky, TeslaCrypt, and TorrentLocker. They each encrypt files using techniques like AES encryption and demand ransom payments after encrypting user files. The document advises how to protect against ransomware, such as avoiding suspicious email attachments.
Este documento describe las turbinas de vapor, incluyendo sus principales componentes como el rotor y el estator, y los tipos de turbinas. Existen dos tipos principales de turbinas de vapor: turbinas axiales, donde el vapor fluye paralelo al eje; y turbinas radiales, donde el vapor fluye perpendicularmente al eje. Las turbinas se dividen en etapas para lograr una mayor expansión del vapor de manera eficiente.
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.
Internet technology and software are inherently vulnerable due to flaws, weaknesses, and gaps in their design, implementation, and security protocols. Thousands of vulnerabilities exist in both software and hardware that can be exploited by hackers if not properly addressed. Common sources of vulnerabilities include design flaws, poor security management, incorrect implementation, vulnerabilities in operating systems, applications, protocols, and ports. Ensuring systems are properly configured, passwords are strong, and users are educated can help reduce vulnerabilities, but due to the complexity of software it is impossible to have fully secure systems.
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.
The document outlines a presentation about ransomware given by Chase Cunningham, a former NSA cryptologist. The agenda includes discussing the threat landscape of ransomware, how it works through a demo, common mistakes and vulnerabilities, and tips for protecting against it. Examples of recent data breaches and cyber attacks are listed, showing hackers are highly skilled, well-funded, and the threats are growing. Ransomware is malware that locks systems and demands ransom to regain access, and has been very profitable for criminals, though protecting systems requires multilayered security and a secure provider.
Cyber extortion is a crime involving an attack or threat of attack against an enterprise, coupled with a demand for money to stop the attack.
Cyber extortions have taken on multiple forms - encrypting data and holding it hostage, stealing data and threatening exposure, and denying access to data.
Malware locks out the user’s system and demands ransom.
Creates “Zombie Computer” operated remotely.
Individuals and business targeted.
This form of extortion works on the assumption that the data is important enough to the user that they are willing to pay for recovery.
There is however no guarantee of actual recovery, even after payment is made.
The first known ransomware was the 1989 "AIDS" trojan (also known as "PC Cyborg") written by Joseph Popp.
I presented this slides in the "Privacy Protection" subject, teached by Prof. Josep Domingo-Ferrer in the Master in Computer Security Engineering and Artificial Intelligence.
Cyber crime refers to any illegal activity involving computers or networks. Early cyber crimes included the first spam email in 1978 and the first computer virus in 1982. Cyber threats have evolved from using computers as simple tools to commit crimes like cyber theft to targeting computers directly through hacking and viruses. As technology advanced, criminals began using computers as instruments to aid crimes like money laundering. Common cyber crimes today include financial crimes, IP spoofing, trojans, web jacking, session hijacking, mail bombing, and keyloggers. Cyber security tools and practices like antivirus software, firewalls, passwords, and awareness can help prevent and defend against cyber crimes.
The presentation is about Ransomware attacks. It includes
~What is Ransomware?
~History of Ransomware
~How it works?
~Types of Ransomware
~How to prevent Ransomware attacks
~Biggest Ransomware attack
~Impact of Ransomware Attacks
~Facts and figures related to Ransomware
Ransomware is a type of malware that encrypts a victim's files and demands ransom payment in order to decrypt the files. The WannaCry attack in 2017 impacted over 300,000 systems in 150 countries through ransomware. While ransomware uses strong encryption, paying the ransom is not recommended as there is no guarantee files will be recovered. It is best to backup files and keep systems updated with the latest security patches to protect against ransomware infections.
William F. Crowe presented on the cybersecurity kill chain, which models the stages of a cyber attack based on military doctrine. The model developed by Lockheed Martin includes stages of reconnaissance, weaponization, delivery, exploitation, installation, command and control, and actions on objectives. ISACA and the European Union Agency for Network and Information Security also use similar kill chain models to analyze the process of advanced persistent threats targeting critical systems and data.
This document discusses Trojans, backdoors, and other malware. It begins by explaining the origin of the term "Trojan" from the story of the Trojan horse in Greek mythology. It then defines Trojans and different types like destructive, denial of service, and remote access Trojans. The document also covers how systems can become infected, techniques for detecting and hiding malware like Trojans and backdoors, and discusses the historical Back Orifice 2000 backdoor as a case study. It concludes with recommendations for protecting against malware.
This document discusses cyber extortion and ransomware. It defines ransomware as malware that locks out a user's system and demands ransom in order to regain access. The document reviews the history of ransomware, describes famous ransomware like Reveton and CryptoLocker, and explains how ransomware works. It provides tips on how to prevent ransomware attacks and instructions for removing malware from Windows PCs.
Threat intelligence involves collecting and analyzing information about cyber attacks from sources like threat intelligence providers, public information sharing centers, and open-source intelligence. This information is used to help organizations defend against known threats. Threat research involves studying past and present threat information to identify indicators of compromise, which can provide evidence that a system has been breached and alert security teams. Common indicators include unusual outbound traffic, anomalies in privileged user accounts, activity from unusual geographic locations, and suspicious changes to device configurations.
Ransomware is malware that encrypts a victim's data and demands ransom payment in order to restore access. It typically infiltrates systems through phishing emails or infected websites and exploits existing vulnerabilities. Once installed, it encrypts target data, covers its tracks, and may spread to other devices. Paying the ransom does not guarantee restoration of data and systems. Ransomware is spreading due to readily available malware kits, use of common platforms like JavaScript that enable cross-platform attacks, and ransomware marketplaces that lower the bar for would-be attackers. Organizations can best prevent ransomware by maintaining updated systems with antivirus software, backing up data, and educating users to avoid phishing attempts.
Cyber security awareness training by cyber security infotech(csi), Information Security,
website development company,
Employee Monitoring System,
Employee Monitoring Software
The basic fundamental of cybersecurity and how can it be used for unethical purposes.
For this type of presentations (customised), you can contact me here : rishav.sadhu11@gmail.com
Malware and Anti-Malware Seminar by Benny CzarnyOPSWAT
Benny Czarny presented an introduction to malware and anti-malware to computer science students at San Francisco State University. The presentation introduced the concept of malware, types of malware, and methods for detecting malware. Benny provided examples of historical malware and illustrations of the difficulties that security vendors face in detecting threats.
The document summarizes the WannaCry/WannaCrypt ransomware attack that affected over 200,000 victims globally in May 2017. It briefly describes how the ransomware works by encrypting files and demanding ransom payments in bitcoin. It also provides details on how systems get infected, the impacts on victims including encrypted files and ransom messages, and recommendations on how to protect systems by patching vulnerabilities and using backups.
This document provides an overview of ransomware, including how it spreads, common types, and how to protect against it. Ransomware encrypts files and demands payment, usually in bitcoin, to decrypt them. It spreads mainly through spam emails containing malicious attachments or links. Common ransomware types discussed are CryptoLocker, CryptoWall, CTB-Locker, Locky, TeslaCrypt, and TorrentLocker. They each encrypt files using techniques like AES encryption and demand ransom payments after encrypting user files. The document advises how to protect against ransomware, such as avoiding suspicious email attachments.
Este documento describe las turbinas de vapor, incluyendo sus principales componentes como el rotor y el estator, y los tipos de turbinas. Existen dos tipos principales de turbinas de vapor: turbinas axiales, donde el vapor fluye paralelo al eje; y turbinas radiales, donde el vapor fluye perpendicularmente al eje. Las turbinas se dividen en etapas para lograr una mayor expansión del vapor de manera eficiente.
El documento habla sobre el diseño gráfico. Explica brevemente la historia del diseño gráfico y cómo aunque ha existido la comunicación visual desde tiempos antiguos, la profesión del diseñador gráfico es más bien reciente. También menciona las principales corrientes que han influenciado el diseño gráfico como el art nouveau, cubismo y constructivismo. Por último, nombra algunos de los programas más utilizados por los diseñadores como Photoshop, Illustrator y Gimp.
Don’t let Ransomware hold your data and your company hostage. Ransomware attacks increased by over 300% in 2016. Watch this Tech Demo to see how Unitrends addresses this prolific threat.
Este documento resume los conceptos básicos sobre computadoras e internet. Explica qué es una computadora, sus partes y tipos de memoria. También describe los sistemas operativos, redes, internet y sus usos. Finalmente, define conceptos como protocolos, buscadores y navegadores.
esta dispositiva rata del google de como son sus funciones de como se caracteriza y darnos cuenta las aplicaciones que contrae como lo que es el traductor y otras como gmailcorreo electrónico.
La norma jurídica se define como un conjunto de reglas dictadas por la autoridad para regular el comportamiento de los individuos en la sociedad. La norma impone deberes y otorga derechos, y su incumplimiento conlleva una sanción o castigo impuesto por el Estado. Sus elementos fundamentales son el supuesto de hecho, que establece las premisas para la norma, y la consecuencia jurídica, que determina la sanción por no cumplir la norma.
This document provides a summary of the top 10 findings from Microsoft's 2016 Trends in Cybersecurity report. Key findings include:
- 41.8% of all vulnerability disclosures were rated as highly severe, a 3-year high risk level.
- Encounters with exploits of the Java programming language are on the decline likely due to changes in how web browsers handle Java applets.
- Consumer computers encounter malware at twice the rate of enterprise computers likely due to stronger security protections in business networks.
- Locations with the highest malware infection rates were Mongolia, Libya, Palestinian territories, Iraq and Pakistan.
Ransomware is Here: Fundamentals Everyone Needs to KnowJeremiah Grossman
If you’re an IT professional, you probably know at least the basics of ransomware. Instead of using malware or an exploit to exfiltrate PII from an enterprise, bad actors instead find valuable data and encrypt it. Unless you happen to have an NSA-caliber data center at your disposal to break the encryption, you must pay your attacker in cold, hard bitcoins—or else wave goodbye to your PII. Those assumptions aren’t wrong, but they also don’t tell the whole picture.
During this event we’ll discuss topics such as:
Why Ransomware is Exploding
The growth of ransomware, as opposed to garden-variety malware, is enormous. Hackers have found that they can directly monetize the data they encrypt, which eliminates the time-consuming process of selling stolen data on the Darknet. In addition, the use of ransomware requires little in the way of technical skill—because attackers don’t need to get root on a victim’s machine.
Who the Real Targets Are
Two years ago, the most newsworthy victims of ransomware were various police departments. This year, everyone is buzzing about hospitals. Is this a deliberate pattern? Probably not. Enterprises are so ill-prepared for ransomware that attackers have a green field to wreak havoc. Until the industry shapes up, bad actors will target ransomware indiscriminately.
Where Ransomware Stumbles
Although ransomware is nearly impossible to dislodge when employed correctly, you may be surprised to find that not all bad actors have the skill to do it. Even if ransomware targets your network, you may learn that your attackers have used extremely weak encryption—or that they’ve encrypted files that are entirely non-critical.
As far as ransomware is concerned, forewarned is forearmed. Once you know how attackers deliver ransomware, who they’re likely to attack, and the weaknesses in the ransomware deployment model, you’ll be able to understand how to protect your enterprise.
This document summarizes Shahram Eivazi's doctoral dissertation on eye gaze patterns in micro-neurosurgery. The dissertation explores whether the eye movement patterns of novice and expert neurosurgeons differ when observing tumor removal recordings. It describes the development of the world's first surgical microscope with an embedded eye tracker to study gazes in neurosurgery. The dissertation finds that expert microsurgeons have an extra ability to long fixate on micro-anatomies and maintain attention on task-relevant areas, demonstrating an information-reduction strategy of visual expertise.
31 growth hacking resources for startup marketers covering newsletters, podcasts, books, communities, and blogs. Bonus Twitter list of growth hackers to follow included.
A Comprehensive Survey: Ransomware Attacks Prevention, Monitoring and Damage ...RSIS International
Ransomware is a type of malware that prevents or
restricts user from accessing their system, either by locking the
system's screen or by locking the users' files in the system unless
a ransom is paid. More modern ransomware families,
individually categorize as crypto-ransomware, encrypt certain
file types on infected systems and forces users to pay the ransom
through online payment methods to get a decrypt key. The
analysis shows that there has been a significant improvement in
encryption techniques used by ransomware. The careful analysis
of ransomware behavior can produce an effective detection
system that significantly reduces the amount of victim data loss.
A comprehensive survey ransomware attacks prevention, monitoring and damage c...RSIS International
Ransomware is a type of malware that prevents or
restricts user from accessing their system, either by locking the
system's screen or by locking the users' files in the system unless
a ransom is paid. More modern ransomware families,
individually categorize as crypto-ransomware, encrypt certain
file types on infected systems and forces users to pay the ransom
through online payment methods to get a decrypt key. The
analysis shows that there has been a significant improvement in
encryption techniques used by ransomware. The careful analysis
of ransomware behavior can produce an effective detection
system that significantly reduces the amount of victim data loss.
A Comprehensive Survey: Ransomware Attacks Prevention, Monitoring and Damage ...AshishDPatel1
This document summarizes a research paper on ransomware attacks, including prevention, monitoring, and damage control. It provides an overview of ransomware, how it has evolved over time, and the techniques used in various ransomware families. It also discusses methods for detecting and preventing ransomware, such as monitoring file system and registry activities. The document concludes that careful analysis of ransomware behavior can help develop effective detection systems to reduce data loss from attacks.
Ransomware is malicious software that encrypts a victim's files and demands ransom payment to decrypt them. It is typically delivered via phishing emails or drive-by downloads. The document discusses trends in ransomware in 2017, including popular ransomware families like Locky, Erebus, and WannaCry. It provides recommendations to mitigate ransomware risks, such as regular backups, anti-virus software, patching systems, and access controls.
Ransomware is a type of malicious software that encrypts a victim's files and demands ransom payment to regain access. It has become a lucrative attack method for cyber criminals. The document discusses what ransomware is, how it affects users, examples of ransomware attacks on hospitals, and recommendations if a user becomes a victim. General tips to defend against ransomware include maintaining consistent data backups, keeping software updated, and educating users about security best practices.
Ransomware and email security ver - 1.3Denise Bailey
This document provides an overview of ransomware attacks and email security. It begins with discussing trends in ransomware attacks and examples of recent high-profile ransomware incidents. It then explains what ransomware is, how it works, and the threats it poses. The document outlines common ransomware lures being used during the COVID-19 pandemic and describes how a ransomware attack occurs and spreads. It provides tips for prevention, detection, recovery from an attack, and discusses whether organizations should pay ransom demands. The document concludes with a discussion on decryption tools and additional security measures organizations can take.
Ransomware Response Guide IBM INCIDENT RESPONSE SERVICESKatherine Duffy
A guide for organizations faced with a ransomware
infection. This guide is split into several sections, with the most
critical and time-sensitive being in the initial response section.
If you are currently experiencing a ransomware incident, it is highly recommended you immediately review the containment section.
This document summarizes a paper about the history, mechanisms, and countermeasures of ransomware. It describes how ransomware has evolved since 1989 from simply encrypting file names to using sophisticated encryption techniques and ransom payment through cryptocurrencies. Recent ransomware incidents have targeted hospitals, which feel pressure to pay ransoms to avoid putting patients at risk. Key countermeasures include awareness training to prevent infection through phishing emails, as well as maintaining backups to recover data without paying ransoms. Sandbox deployment and signature analysis can also help detect and block ransomware.
Ransomware- A reality check (Part 1).pptxInfosectrain3
Ransomware is the type of malicious software or malware that prevents you from accessing your files, networks, or systems. They demand a ransom amount to get your access back.
Ransomware is a PC or Mac-based malicious piece of software that encrypts a user or company’s files and forces them to pay a fee to the hacker in order to regain access to their own files.
Not only can ransomware encrypt the files on your computer; the software is smart enough to travel across your network and encrypt any files located on shared network drives. This can lead to a catastrophic situation whereby one infected user can bring an entire company to a halt.
This article discusses the CryptoLocker ransomware threat. CryptoLocker encrypts files on infected systems and demands ransom payments in Bitcoin for the decryption key. It spreads through malicious email attachments and drive-by downloads from compromised websites. The article provides guidance for enterprises to protect themselves, including disabling Flash on untrusted sites, filtering email attachments, disabling Office macros, maintaining backups, and educating users about ransomware risks.
Training on July 16, 2017.
This training is the compressed version of Malware Engineering & Crafting.
In this training, we will talk about malware as well as crafting the simple working malware. The goal of this session is to understanding malware internal so one can have tactics to combat it.
Ransomware has become a serious epidemic affecting businesses of all sizes, and protecting your company is more essential than ever before as the number of ransomware attacks continues to rise.
This PPT aims at providing brief information about the malware, Ransomware. This PPT contains information about ransomware’s way of functioning, its prime targets and certain effective measures that need to be taken to alleviate the risks related to this perilous malware.
What is SPYWARE?
Spyware is a type of malware that's hard to detect.
It collects information about your surfing habits, browsing history, or personal information (such as credit card numbers), and often uses the internet to pass this information along to third parties without you knowing.
o Key loggers are a type of spyware that monitors your key strokes.
Spyware is mostly classified into four types:
1.System monitors
2.Trojans
3.Adware
4.Tracking Cookies
spyware is mostly used for the purposes of tracking and storing internet users' movements on the web and serving up pop-up ads to internet users.
History and development of spyware.
The first recorded on October 16, 1995 in a UseNet post that poked fun at microsoft's business model.
Spyware at first denoted software meant for espionage purposes.
However, in early 2000 the founder of zone labs, gregor freund, used the term in a press release for the zone alarm personal firewall.
Use of exploits in JavaScript, internet explorer and windows to install.
Effect and behavior.
Unwanted behavior and degradation of system performance.
Unwanted CPU activity, disk usage, and network traffic.
Stability issues:-
Application's freezing.
Failure to boot.
System-wide crashes.
Difficulty connecting to the internet.
Disable software firewalls and anti-virus software.
Routes of infection.
Installed when you open an email attachment.
Spyware installs itself
Install by using deceptive tactics
Common tactics are using a Trojan horse.
USB Keylogger.
browser forces the download and installation of spyware.
Security Practices.
• Installing anti-spyware programs.
• Network firewalls and web proxies to block access to web sites known to install spyware
• Individual users can also install firewalls.
• Install a large hosts file.
• It Install shareware programs offered for download.
• Downloading programs only from reputable sources can provide some protection from this source of attack
Anti-spyware Programs
• Products dedicated to remove or block spyware.
• Programs such as pc tool’s spyware doctor, lava soft's ad-aware se and patrick kolla's spybot - search & destroy.
Legal Issues.
Criminal law
US FTC actions
Netherlands OPTA
Civil law
Libel suits by spyware developers
Webcam Gate
Thank You!
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2. Hello!I am Tharindu Edirisinghe
You can find me at ….
tharindue.blogspot.com @thariyarox https://lk.linkedin.com/in/ediri ediri@live.com
3. The FBI reported that cyber criminals used
ransomware to extort $209 million from
enterprise organizations in the first three months
of 2016 alone.
Source :
http://money.cnn.com/2016/04/15/technology/ransomware-cyber-security/
4.
5.
6. The name “ransomware” refers to a type of malware that is designed to infect machines,
encrypt as many files as possible and hold the decryption key for ransom until the
victim submits the required payment.
While documented complaints of modern ransomware date back to 2005, the malware
has recently gained a new popularity. In 2015 alone, there were nearly 407,000
attempted ransomware infections and over $325 million extorted from victims.
Souce : https://www.cyberark.com/resource/cyberark-labs-ransomware/
7. There is another variant of ransomware that blocks the usage of the
device with the same goal of extracting payment from the victim.
This behavior includes spawning multiple messages across the
screen disrupting user application usage or inhibiting the normal
boot process of the operating system with displaying a ransom
message instead of a user login screen.
Source : http://cyberthreatalliance.org/cryptowall-report.pdf
8. In cryptography, encryption is the process of encoding messages or information in such a
way that only authorized parties can access it.
Source : https://en.wikipedia.org/wiki/Encryption
Image Source :
http://kryptophone.kryptotel.net/faq/encryption/index.html
17. Once the ransomware was triggered to execute, 90% of the samples analyzed first attempted to
communicate back to an attacker-managed key server, which held the unique public key used to encrypt files
on the machine. In 20% of all cases, if the connection could not be established, the ransomware would fail. Yet,
a full 70% of ransomware samples were able to execute using a default public key, even if a unique key could
not be retrieved from the key server. Notably, this approach can be less effective for the attacker, as a victim
can potentially use a single default decryption key that has already been purchased to decrypt all files that
were encrypted using the same key. The remaining 10% of samples included a unique key generator within the
ransomware file itself, thus eliminating the need for an outside connection. Based on this observation, the
research team noted that if organizations could limit the ransomware’s ability to establish an outside
connection, organizations could typically either prevent the ransomware from executing or force the
attackers to use a default key, thus minimizing the financial impact of the attack.
Souce : https://www.cyberark.com/resource/cyberark-labs-ransomware/
18.
19. 1. Ransomware is Evolving by the Hour
Unlike traditional malware, which is frequently reused across a wide range of targets,
ransomware strains are typically mutated for each new victim. Traditional anti-virus
solutions that rely on blacklists are typically ineffective in preventing ransomware because
they simply can’t keep up with the thousands of new samples produced each day. To
effectively protect against ransomware risks, organizations can’t just protect against known
malware; they also need to protect against unknown malicious applications.
20. 2. A Common Path to Encryption
The team observed what actions were executed by different ransomware samples, and
learned the samples across different families all followed similar subsequent processes.
Typically, the malware first attempted to communicate back to an attacker-managed key
server, which held the unique public key used to encrypt files on the machine. Second, the
ransomware began to scan the infected machines to locate specific files types. Third, upon
locating the files, the ransomware began the encryption process, while working to maximize
the number of impacted machines.
21. 3. Ransom Payment Method of Choice
To receive the key needed to decrypt the impacted files, users were required to submit
payment – the ransom – to the attackers. Payment was typically demanded in Bitcoin, and
for Bitcoin novices, some attackers went so far as to set up “help desks” to help victims
purchase Bitcoin and complete the funds transfer.
22. 4. Ransomware Seeks Admin Rights
In 70% of tested cases, ransomware attempted to gain local administrator rights once
activated. But interestingly, only 10% of the tested files failed if these rights could not be
attained. This shows that even though the removal of local administrator rights from
standard users is a best practice and certainly could have prevented some of the
ransomware, this measure must be layered with application control to reliably protect
against file encryption.
23. 5. A Common Denominator
Testing by CyberArk Labs demonstrated that a highly effective way to mitigate the risk of
ransomware attacks is to prevent unknown applications, including unknown ransomware,
from gaining the read, write and edit permissions needed to encrypt files. When tested by
CyberArk Labs, a combined approach of removing local admin rights and application control,
including greylisting, which restricts read, write and modify permissions from unknown
applications was 100 percent effective in preventing ransomware from encrypting files.
https://www.cyberark.com/blog/new-cyberark-labs-research-analyzing-ransomware-
potential-mitigation-strategies/
24. Shade is a ransomware-type Trojan that emerged in late 2014. The malware is spread via
malicious websites and infected email attachments. After getting into the user’s system,
Shade encrypts files stored on the machine and creates a .txt file containing the ransom note
and instructions from cybercriminals on what to do to get user’s personal files back. Shade
use strong decryption algorithm for each encrypted file, with two random 256-bit AES keys
generated: one is used to encrypt the file’s contents, while the other is used to encrypt the file
name.
Since 2014, Kaspersky Lab and Intel Security prevented more than 27 000 attempts to attack
users with Shade Trojan. Most of the infections occurred in Russia, Ukraine, Germany, Austria
and Kazakhstan. Shade activity was also registered in France, Czech Republic, Italy, and the
US.
Source : https://www.helpnetsecurity.com/2016/07/25/no-more-ransom/
25. Ransomware is often spread via spam campaigns or exploit kits, but LeChiffre takes a
different approach. LeChiffre developers scan networks for poorly secured, vulnerable
Remote Desktops, log in remotely after cracking them, and then manually run an instance of
the malware to encrypt files and append the extension “.LeChiffre” to them.
Security researchers at Emsisoft already managed to come up with a LeChiffre decrypter,
after discovering that the malware encrypts only the first 8192 bytes of a file and if the file is
bigger than 16999 bytes, and also the last 8192 of the file, using Blowfish
Source : http://www.securityweek.com/lechiffre-ransomware-hits-indian-banks-pharma-
company
26. Ransomware is a very successful model of attack and its mobile variant is not much different
from its desktop counterpart. Usually, the user is tricked into installing a useful app—for
example, an app that pretends to be Adobe Flash player. Once installed and executed, the
malicious application attempts to encrypt all accessible documents, images, and multimedia
files on the device. When this process is finished, the ransomware application displays a text,
a warning that often seems to come from law enforcement agencies such as the FBI and
instructs the user how to pay to restore files and access to the device.
Some of the most successful Android ransomware families are Simplocker and Koler. The
recently discovered Locker family actually sets a PIN for the device and makes the restore
almost impossible if the
user is not willing to pay the attackers for recovery instructions.
Souce :
https://www.thehaguesecuritydelta.com/media/com_hsd/report/57/document/4aa6-
3786enw.pdf
27. 1. Have a Backup Solution in Place
Access and storage of your data is mission-critical to your business, especially when
dealing with a ransomware attack. If you backup your data routinely, ransom Trojans are
easy to remove. Recover the files from a backup and hope the person at fault learns their
lesson.
2. Keep Software up to Date
Some ransom Trojans target user carelessness (“click this link,” or “open this
attachment”). Others exploit vulnerabilities in software. Keep all your software patched,
especially the most common and popular off-the-shelf products – they are the first ones
a hacker will target.
28. 3. Filter Executables
Disguised as an invoice, an “urgent” document, or a notification that you’ve missed a
delivery -- these are often hidden in ZIP archives. Make sure to filter those and
executables in general.
4. Show File Extensions
By allowing Windows to show file extensions, it makes it difficult for hackers to keep thier
intentions hidden. For example, if a file is really called “Invoice.doc.exe,” then you shouldn’t
allow it to present itself to the user as “Invoice.doc.”
29. 5. Restrict User Privileges
Keep incidents isolated by making sure one infected user does not bring down your entire
network. By limiting machine access to only what it needs it can save your business
significantly in downtime, allowing unaffected users/departments to continue working
productively.
6. Disable Remote Desktop Protocol
Hackers love to use Windows’ native remote access feature and third-party software to
get malicious code onto computers. Although the remote desktop protocol is very useful,
it does not need to be switched on all the time.
30. 7. Get a Security Audit from a Reputable IT Consultant
A credible and experienced IT Consultant, like Lantium, can assess your organization’s
information systems, business processes, and overall cyber presence to help you identify
methods to keep your business protected. By being proactive, you can ensure your
business stays safe in 2017!
Source: http://blog.lantium.com/seven-things-to-protect-your-business-from-
ransomware
31. The “No More Ransom” website is an initiative by the National High Tech Crime Unit of
the Netherlands’ police, Europol’s European Cybercrime Centre and two cyber security
companies – Kaspersky Lab and Intel Security – with the goal to help victims of
ransomware retrieve their encrypted data without having to pay the criminals.
Source : https://www.nomoreransom.org/about-the-project.html
32. Ransomware Families and Types http://avien.net/blog/ransomware-resources/ransomware-families-and-
types
Analysis of the CryptoWall Version 4 Threat
http://cyberthreatalliance.org/cryptowall-report.pdf
Even the best antivirus likely can't save your files from a ransomware infection
http://www.businessinsider.com/fighting-ransomware-with-antivirus-2016-1
Hewlett Packard Enterprise - Cyber Risk Report 2016
https://www.thehaguesecuritydelta.com/media/com_hsd/report/57/document/4aa6-3786enw.pdf
Shoddy Programming causes new Ransomware to destroy your Data
https://www.bleepingcomputer.com/news/security/shoddy-programming-causes-new-ransomware-to-
destroy-your-data
33. THANKS!Any questions?
You can find me at ….
tharindue.blogspot.com @thariyarox https://lk.linkedin.com/in/ediri ediri@live.com