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trojan

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Dictionary

Trojan

A program that appears legitimate, but performs some illicit activity when it is run. It may be used to locate password information or make the system more vulnerable to future entry or simply...

Dictionary

Definition: Trojan

A program that appears legitimate, but performs some illicit activity when it is run. It may be used to locate password information or make the system more vulnerable to future entry or simply destroy programs or data on the hard disk. A Trojan is similar to a virus, except that it does not replicate itself. It stays in the computer doing its damage or allowing somebody from a remote site to take control of the computer. Trojans often sneak in attached to a free game or other utility. For information about various Trojans that are spread on the Internet, visit the Lockdown Corporation at www.lockdowncorp.com. See Trojan dropper, wiretap Trojan, rootkit, RAT, Back Orifice, NetBus, PrettyPark, Talking Trojan and virus.

The Trojan Horse
Trojan comes from Greek mythology, in which the Greeks battled the Trojans (people of Troy). After years of being unable to break into the fortified city, the Greeks built a wooden horse, filled it with soldiers and pretended to sail away. After the Trojans brought the horse into the city, the Greek soldiers crept out at night, opened the gates of Troy to the returning soldiers, and Troy was destroyed.



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  • UK police make Zeus Trojan arrests

    The UK Metropolitan Police Central e-Crime Unit made two arrests earlier this month for suspected use of the Zeus Trojan.

    News items | November 19, 2009 1:22pm PST

  • Facebook users targeted by Zeus banking Trojan

    Users of the popular social network are being tricked into revealing their passwords and downloading a Trojan that steals financial data. Here's how...

    News items | October 29, 2009 7:05am PDT

  • Chinese firms accused of 'Sexy Space' Trojan

    F-Secure has named three China-based companies as the creators of the "Sexy Space" Trojan, which was identified last week to have passed through the Symbian Foundation's digital signing process.

    News items | July 22, 2009 8:24am PDT

  • Phone Trojan 'has botnet features'

    A piece of malware aimed at mobile devices with Symbian operating systems has the capacity to enable a hacker to build a botnet of phones, according to Trend Micro.

    News items | July 16, 2009 5:20am PDT

  • Mac OS X targeted by Trojan and backdoor tool

    Two new pieces of malware affecting Mac OS X appeared this week, a Trojan horse and a hacker tool for creating backdoors.

    News items | November 21, 2008 4:38am PST

  • Cloud-computing zombies for $299 per month

    RSA says cloud-computing crimeware means networks of zombie machines can be hired to steal online-banking details for as little as $299 a month.

    News items | November 3, 2008 5:26am PST

  • First iPhone Trojan in the wild

    The long-awaited first Trojan for Apple's iPhone arrived and left its shoe print. When installed the Trojan displays the word "shoes" on the screen.

    News items | January 8, 2008 11:26am PST

Additional Results

  • Cross-platform malware exploits Java to attack PCs and Macs

    The same Java vulnerability used in the infamous Flashback malware is now being used as an attack vector for a single piece of malware that can infect both Windows and Mac OS X computers.

    Blog posts | May 1, 2012 9:39am PDT

  • Mac botnet generated $10,000 a day for Flashback gang

    Flashback was robbing Google of advertising dollars by redirecting clicks from infected Mac OS X machines and stealing the ad revenue.

    Blog posts | May 1, 2012 6:38am PDT

  • New Java trojan and old MS Word vulnerabilities need patching

    According to fresh warnings by security vendor Intego, another Java vulnerability is attacking Macs that haven't been patched with Apple's Java for OS X Lion 2012-002 and Java for Mac OS X 10.6...

    Blog posts | April 22, 2012 10:44pm PDT

  • New version of Mac OS X Trojan exploits Word, not Java

    A second variant of the Mac OS X Trojan referred to as Backdoor.OSX.SabPub.a or SX/Sabpab-A is exploiting a Microsoft Word security hole, not the usual Java vulnerabilities used before.

    Blog posts | April 16, 2012 8:25am PDT

  • New targeted Mac OS X Trojan requires no user interaction

    A new Mac OS X Trojan referred to as Backdoor.OSX.SabPub.a or SX/Sabpab-A is also exploiting Java vulnerabilities in a way that requires no user interaction. It is being used in targeted attacks.

    Blog posts | April 14, 2012 12:44pm PDT

  • Apple developing tool to detect and remove Flashback Trojan

    Apple is developing a tool to detect and remove the Flashback Trojan that has infected over 600,000 Macs. In the meantime, here are some alternatives for both detecting and removing the malware.

    Blog posts | April 10, 2012 9:04pm PDT

  • Quick protection for older Macs from the Flashback trojan

    Most modern Macs have Java installed, so they could be vulnerable to the Flashback. While Apple posted a security fix for Mac OS X Lion and Mac OS X Snow Leopard, there are many millions of Macs...

    Blog posts | April 8, 2012 8:21pm PDT

  • The scariest thing about the Flashback trojan: I have no idea how to fight it

    The recent reemergence of the Flashback OSX trojan has shown a lot of things, but none more clearly than this: I have no clue how to counter virus and trojan threats on the Mac.

    Blog posts | April 5, 2012 12:28pm PDT

  • Over 600,000 Macs infected with Flashback Trojan

    The Flashback Trojan botnet reportedly controls over 600,000 Macs. Thankfully, Apple yesterday released a patch for Java, which the Trojan exploits, so make sure you install it.

    Blog posts | April 4, 2012 8:56pm PDT

  • Fake 'Roar of the Pharaoh' Android game spreads premium-rate SMS trojan

    Security researchers from Sophos, have spotted a bogus Chinese game, that's actually a trojan horse gathering sensitive information from infected devices, next to sending premium-rate SMS messages.

    Blog posts | March 30, 2012 9:18am PDT

  • Hardware imported from China could leave U.S. open to cyber-threats

    Cybersecurity advisor Richard Clarke warns that imports of chips, routers and hardware from China and other foreign suppliers could leave the U.S. open to cyber-attacks and cyber-threats.

    Blog posts | March 30, 2012 6:13am PDT

  • Duqu Trojan programming language identified

    Security firm Kaspersky asked the programming community to identify a section of the Duqu Trojan it says was partly written in an unrecognized programming language. Now it finally has the answer: C.

    Blog posts | March 19, 2012 8:05am PDT

  • Anonymous releases an OS?

    A Tumblr webpage has been created for a new operating system called "Anonymous-OS Live." At least two reliable sources for Anonymous news says the OS isn't what you think it is.

    Blog posts | March 15, 2012 9:30am PDT

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