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This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. Computer program that modifies other programs to replicate itself and spread 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 is a type of malware that, when executed, replicates itself by ...
[6] [7] [8] The Intercept provided samples of Regin for download, including malware discovered at a Belgian telecommunications provider, Belgacom. [5] Kaspersky Lab says it first became aware of Regin in spring 2012, but some of the earliest samples date from 2003. [9] (The name Regin is first found on the VirusTotal website on 9 March 2011. [5])
AIDS, also known as Aids Info Drive or PC Cyborg Trojan, is a DOS Trojan horse whose payload mungs and encrypts the names of all directories on drive C:. It was developed by Dr. Joseph Popp (1950-2006), an evolutionary biologist with a doctorate from Harvard.
The Rabbit (or Wabbit) virus, more a fork bomb than a virus, is written. The Rabbit virus makes multiple copies of itself on a single computer (and was named " rabbit " for the speed at which it did so) until it clogs the system, reducing system performance, before finally reaching a threshold and crashing the computer.
The first IBM PC compatible "in the wild" computer virus, and one of the first real widespread infections, was "Brain" in 1986. From then, the number of viruses has grown exponentially. [14] [15] Most of the computer viruses written in the early and mid-1980s were limited to self-reproduction and had no specific damage routine built into the ...
Avast Antivirus is a family of cross-platform internet security applications developed by Avast for Microsoft Windows, macOS, Android, and iOS.Avast offers free and paid products that provide computer security, browser security, antivirus software, firewall, anti-phishing, antispyware, and anti-spam, among other services.
Most noticeably, every 50th time the program was run, instead of executing normally, it would change to a blank screen that displayed a poem about the virus. If a computer booted from an infected floppy disk, a copy of the virus was placed in the computer's memory. When an uninfected disk was inserted into the computer, a modified version of ...
CryptoLocker typically propagated as an attachment to a seemingly innocuous email message, which appears to have been sent by a legitimate company. [5] A ZIP file attached to an email message contains an executable file with the filename and the icon disguised as a PDF file, taking advantage of Windows' default behaviour of hiding the extension from file names to disguise the real .EXE extension.