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In computing, a Trojan horse (or simply Trojan) is a malware that misleads users of its true intent by disguising itself as a normal program. The term is derived from the ancient Greek story of the deceptive Trojan Horse that led to the fall of the city of Troy. [1] Trojans are generally spread by some form of social engineering.
September 9: The virus, called "here you have" or "VBMania", is a simple Trojan horse that arrives in the inbox with the odd-but-suggestive subject line "here you have". The body reads "This is The Document I told you about, you can find it Here" or "This is The Free Download Sex Movies, you can find it Here".
The worm attempts to download a trojan horse named WIN-BUGSFIX.exe. To achieve this, the victim's Internet Explorer homepage is set to a URL that downloads the trojan upon opening the browser. If the download is successful, the trojan is set to run upon reboot and the Internet Explorer homepage is set to a blank page. The trojan fulfils Guzman ...
Trojan worm February 14, 2006 Most known for being the first virus targeting Mac computers. Morris: November 2, 1988 Robert Tappan Morris: Widely considered to be the first computer worm. Although created for academic purposes, the negligence of the author unintentionally caused the worm to act as a denial of service attack.
This category is for Trojan horses, a form of computer malware. For the Greek legend about a hollow wooden horse that inspired the computing term, see Trojan horse . See also
Leap - Mac OS X Trojan horse; Shamoon a wiper virus with stolen digital certificates destroyed over 35,000 computers owned by Saudi Aramco. Storm Worm - A Windows trojan horse that forms the Storm botnet; Stuxnet First destructive ICS-targeting Trojan which destroyed part of Iran's nuclear program.
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]
Graybird is a Trojan horse that hides its presence on compromised computers and downloads files from remote Web sites. There are many variations of this virus. It was discovered on September 3, 2003 and affects Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP, and Windows Vista.