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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 ...
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.
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.
The virus was notable due to the destructive nature of the attack and the cost of recovery. Shamoon can spread from an infected machine to other computers on the network. Once a system is infected, the virus continues to compile a list of files from specific locations on the system, upload them to the attacker, and erase them.
In computer programming, unreachable code is part of the source code of a program which can never be executed because there exists no control flow path to the code from the rest of the program. [ 1 ] Unreachable code is sometimes also called dead code , [ 2 ] [ 3 ] although dead code may also refer to code that is executed but has no effect on ...