Trojan horse ( computing ) - wikipedia Trojan horse ( computing ) For other uses, see Trojan horse ( disambiguation ). This article is part of a series on Computer Hacking History Phreaking Cryptovirology Hacker ethic Hacker Manifesto Black hat Grey hat White hat Conferences Black Hat Briefings DEF CON Chaos Communication Congress Computer crime Crimeware List of computer criminals Script kiddie Hacking tools Security OS Vulnerability Exploit Payload Practice sites HackThisSite Zone - H Malware Rootkit Backdoor Trojan horse Virus Worm Spyware Botnet Keystroke logging Antivirus software Firewall HIDS Computer security Application security Network security Groups Hacker group Red and Blue Teams In computing, a Trojan horse, or Trojan, is any hacking computer program which misleads users of its true intent. The term is derived from the Ancient Greek story of the deceptive wooden horse that led to the fall of the city of Troy. Trojans are generally spread by some form of social engineering, for example where a user is duped into executing an e-mail attachment disguised to be unsuspicious, ( e.g., a routine form to be filled in ), or by drive - by download. Although their payload can be anything, many modern forms act as a backdoor, contacting a controller which can then have unauthorized access to the affected computer. Trojans may allow an attacker to access users ' personal information such as banking information, passwords, or personal identity ( IP address ). It can infect other devices connected to the network. Ransomware attacks are often carried out using a Trojan. Unlike computer viruses and worms, Trojans generally do not attempt to inject themselves into other files or otherwise propagate themselves. Antivirus can not protect you from trojan. Contents 1 Malicious uses 2 Notable examples 2.1 Private and governmental 2.2 Publicly available 2.3 Detected by security researchers 3 See also 4 References 5 External links Malicious uses Trojan in this way may require interaction with a malicious controller ( not necessarily distributing the Trojan ) to fulfill their purpose. It is possible for those involved with Trojans to scan computers on a network to locate any with a Trojan installed, which the hacker can then control... Some Trojans take advantage of a security flaw in older versions of Internet Explorer and Google Chrome to use the host computer as an anonymizer proxy to effectively hide Internet usage, enabling the controller to use the Internet for illegal purposes while all potentially incriminating evidence indicates the infected computer or its IP address. The host 's computer may or may not show the internet history of the sites viewed using the computer as a proxy. The first generation of anonymizer Trojan horses tended to leave their tracks in the page view histories of the host computer. Later generations of the Trojan tend to `` cover '' their tracks more efficiently. Several versions of Sub7 have been widely circulated in the US and Europe and became the most widely distributed examples of this type of Trojan. In German - speaking countries, spyware used or made by the government is sometimes called govware. Govware is typically a Trojan software used to intercept communications from the target computer. Some countries like Switzerland and Germany have a legal framework governing the use of such software. Examples of govware trojans include the Swiss MiniPanzer and MegaPanzer and the German `` state trojan '' nicknamed R2D2. Due to the popularity of botnets among hackers and the availability of advertising services that permit authors to violate their users ' privacy, Trojans are becoming more common. According to a survey conducted by BitDefender from January to June 2009, `` Trojan - type malware is on the rise, accounting for 83 - percent of the global malware detected in the world. '' Trojans have a relationship with worms, as they spread with the help given by worms and travel across the internet with them. BitDefender has stated that approximately 15 % of computers are members of a botnet, usually recruited by a Trojan infection. Notable examples Private and governmental FinFisher -- Lench IT solutions / Gamma International DaVinci / Galileo RCS -- HackingTeam 0zapftis / r2d2 StaatsTrojaner -- DigiTask TAO QUANTUM / FOXACID -- NSA Magic Lantern -- FBI WARRIOR PRIDE -- GCHQ Publicly available Netbus -- 1998 ( published ) Sub7 by Mobman -- 1999 ( published ) Back Orifice -- 1998 ( published ) Beast -- 2002 ( published ) Bifrost Trojan -- 2004 ( published ) DarkComet -- 2008 ( published ) Blackhole exploit kit -- 2012 ( published ) Gh0st RAT -- 2009 ( published ) MegaPanzer BundesTrojaner -- 2009 ( published ) Detected by security researchers Clickbot. A -- 2006 ( discovered ) Zeus -- 2007 ( discovered ) Flashback Trojan -- 2011 ( discovered ) ZeroAccess -- 2011 ( discovered ) Koobface -- 2008 ( discovered ) Vundo -- 2009 ( discovered ) Meredrop -- 2010 ( discovered ) Coreflood -- 2010 ( discovered ) Tiny Banker Trojan -- 2012 ( discovered ) Shedun Android malware -- 2015 ( discovered ) See also Botnet Computer security Remote administration Remote administration software Cyber spying Dancing pigs Exploit ( computer security ) Industrial espionage Malware Principle of least privilege Privacy - invasive software Reverse connection Rogue security software Timeline of computer viruses and worms Zombie ( computer science ) References Carnegie Mellon University ( 1999 ) : `` CERT Advisory CA - 1999 - 02 Trojan Horses '', ЎЦ Jump up ^ Landwehr, C. E ; A. R Bull ; J. P McDermott ; W. S Choi ( 1993 ). A taxonomy of computer program security flaws, with examples. DTIC Document. CiteSeerX 10.1. 1.35. 997. Retrieved 2012 - 04 - 05. Jump up ^ `` Trojan Horse Definition ''. Retrieved 2012 - 04 - 05. Jump up ^ Data theft = = `` Trojan horse '' Check url = value ( help ). Webopedia. Retrieved 2012 - 04 - 05. Jump up ^ `` What is Trojan horse ? -- Definition from Whatis.com ''. Retrieved 2012 - 04 - 05. Jump up ^ `` Trojan Horse : ( coined By MIT - hacker - turned - NSA - spook Dan Edwards ) N. ''. Retrieved 2012 - 04 - 05. Jump up ^ `` What is the difference between viruses, worms, and Trojans ? ''. Symantec Corporation. Retrieved 2009 - 01 - 10. Jump up ^ `` VIRUS - L / comp. virus Frequently Asked Questions ( FAQ ) v2. 00 ( Question B3 : What is a Trojan Horse ? ) ''. 9 October 1995. Retrieved 2012 - 09 - 13. ^ Jump up to : Jamie Crapanzano ( 2003 ) : `` Deconstructing SubSeven, the Trojan Horse of Choice '', SANS Institute, Retrieved on 2009 - 06 - 11 Jump up ^ Vincentas ( 11 July 2013 ). `` Trojan Horse in SpyWareLoop.com ''. Spyware Loop. Retrieved 28 July 2013. ^ Jump up to : Basil Cupa, Trojan Horse Resurrected : On the Legality of the Use of Government Spyware ( Govware ), LISS 2013, pp. 419 -- 428 Jump up ^ `` Dokument nicht gefunden ! ''. Federal Department of Justice and Police. Archived from the original on May 6, 2013. Jump up ^ `` Swiss coder publicises government spy Trojan -- Techworld.com ''. News.techworld.com. Retrieved 2014 - 01 - 26. Jump up ^ BitDefender.com Malware and Spam Survey Jump up ^ Datta, Ganesh. `` What are Trojans ? ''. SecurAid. Jump up ^ `` Mega-Panzer ''. Jump up ^ `` Mini-Panzer ''. Jump up ^ `` Trojanized adware family abuses accessibility service to install whatever apps it wants - Lookout Blog ''. Jump up ^ `` Shedun trojan adware is hitting the Android Accessibility Service - TheINQUIRER ''. Jump up ^ `` Lookout discovers new trojanized adware ; 20K popular apps caught in the crossfire - Lookout Blog ''. Jump up ^ `` Shuanet, ShiftyBug and Shedun malware could auto - root your Android ''. 5 November 2015. Jump up ^ Times, Tech ( 9 November 2015 ). `` New Family Of Android Malware Virtually Impossible To Remove : Say Hello To Shedun, Shuanet And ShiftyBug ''. Jump up ^ `` Android adware can install itself even when users explicitly reject it ''. External links Trojan Horses at DMOZ Malware topics Infectious malware Computer virus Comparison of computer viruses Computer worm List of computer worms Timeline of computer viruses and worms Concealment Trojan horse Rootkit Backdoor Zombie computer Man - in - the - middle Man - in - the - browser Man - in - the - mobile Clickjacking Malware for profit Privacy - invasive software Adware Spyware Botnet Keystroke logging Form grabbing Web threats Fraudulent dialer Malbot Scareware Rogue security software Ransomware Crimeware By operating system Linux malware Palm OS viruses Mobile malware Macro virus Classic Mac OS viruses MacOS malware iOS malware Android malware Protection Anti-keylogger Antivirus software Browser security Internet security Mobile security Network security Defensive computing Firewall Intrusion detection system Data loss prevention software Countermeasures Computer and network surveillance Operation : Bot Roast Honeypot Computer security portal Software portal GND : 4779909 - 2 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Trojan_horse_(computing)&oldid=802529104 '' Categories : Trojan horses Social engineering ( computer security ) Spyware Web security exploits Cyberwarfare Hidden categories : Pages with URL errors Articles with DMOZ links Wikipedia articles with GND identifiers Talk Contents About Wikipedia Azərbaycanca Bân - lâm - gú Български Boarisch Bosanski Català Čeština Dansk Deutsch Eesti Ελληνικά Español Esperanto Euskara فارسی Français Galego 한국어 Hrvatski Bahasa Indonesia Italiano עברית Basa Jawa Latina Latviešu Lietuvių Lumbaart Magyar മലയാളം Bahasa Melayu Монгол မြန်မာဘာသာ Nederlands 日本 語 Norsk Norsk nynorsk ਪੰਜਾਬੀ Polski Português Română Русский Sámegiella Scots Shqip Simple English Slovenčina Slovenščina Српски / srpski Srpskohrvatski / српскохрватски Suomi Svenska Tagalog ไทย Türkçe Українська Tiếng Việt 粵語 中文 Edit links This page was last edited on 26 September 2017, at 18 : 59. 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Question: what is the trojan virus on your computer
Answer: any hacking computer program which misleads users of its true intent