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  2. Malware - Wikipedia

    en.wikipedia.org/wiki/Malware

    Malware (a portmanteau for malicious software) is any software intentionally designed to cause disruption to a computer, server, client, or computer network, leak private information, gain unauthorized access to information or systems, deprive access to information, or which unknowingly interferes with the user's computer security and privacy.

  3. Computer virus - Wikipedia

    en.wikipedia.org/wiki/Computer_virus

    Computer virus. Hex dump of the Brain virus, generally regarded as the first computer virus for the IBM Personal Computer (IBM PC) and compatibles. A computer virus [1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs.

  4. Ransomware - Wikipedia

    en.wikipedia.org/wiki/Ransomware

    Ransomware is a type of cryptovirological malware that permanently blocks access to the victim's personal data unless a ransom is paid. While some simple ransomware may lock the system without damaging any files, more advanced malware uses a technique called cryptoviral extortion. It encrypts the victim's files, making them inaccessible, and ...

  5. Computer security - Wikipedia

    en.wikipedia.org/wiki/Computer_security

    Computer security, cybersecurity, digital security, or information technology security (IT security) is the protection of computer systems and networks from attacks by malicious actors that may result in unauthorized information disclosure, theft of, or damage to hardware, software, or data, as well as from the disruption or misdirection of the ...

  6. Antivirus software - Wikipedia

    en.wikipedia.org/wiki/Antivirus_software

    Antivirus software (abbreviated to AV software), also known as anti-malware, is a computer program used to prevent, detect, and remove malware. Antivirus software was originally developed to detect and remove computer viruses , hence the name.

  7. Internet security - Wikipedia

    en.wikipedia.org/wiki/Internet_security

    Malicious software. Malicious software comes in many forms, such as viruses, Trojan horses, spyware, and worms. Malware, a portmanteau of malicious software, is any software used to disrupt computer operation, gather sensitive information, or gain access to private computer systems. Malware is defined by its malicious intent, acting against the ...

  8. Spyware - Wikipedia

    en.wikipedia.org/wiki/Spyware

    Spyware (a portmanteau for spying software) is any software with malicious behavior that aims to gather information about a person or organization and send it to another entity in a way that harms the user by violating their privacy, endangering their device's security, or other means.

  9. Malicious Software Removal Tool - Wikipedia

    en.wikipedia.org/wiki/Malicious_Software_Removal...

    Malicious Software Removal Tool. Microsoft Windows Malicious Software Removal Tool ( MSRT) is a freeware second-opinion malware scanner that Microsoft 's Windows Update downloads and runs on Windows computers each month, independent of the install antivirus software. First released on January 13, 2005, [2] MSRT does not offer real-time protection.

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