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Zeus is very difficult to detect even with up-to-date antivirus and other security software as it hides itself using stealth techniques. [5] It is considered that this is the primary reason why the Zeus malware then had become the largest botnet on the Internet: Damballa estimated that the malware infected 3.6 million PCs in the U.S. in 2009. [6]
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 ...
Mebroot is a master boot record based rootkit used by botnets including Torpig.It is a sophisticated Trojan horse that uses stealth techniques to hide itself from the user. The Trojan opens a back door on the victim's computer which allows the attacker complete control over the computer.
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 ...
[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.
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.