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What Is A Trojan Horse?

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#1 honu1


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Posted 21 February 2007 - 09:44 PM

I just recieved 2 notices from my AVG anti-virus protection that Trojan Horse Flooder.BBG was detected, then cleaned. I am faithful about making sure all my programs are up to date.
How does this happen+now what do I need to do?
I'm a novice user+very worried :thumbsup:
Thank you
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#2 buddy215


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Posted 21 February 2007 - 10:41 PM

Trojans are malware programs that stealthily get on your computer thru mostly user action such as clicking on a link in email,IM's, web pages or opening email attachments.
They are also delivered by scripted driveby downloads where all you have to do is visit a web page or mouse over an image. Another way they get on your computer is they come bundled with P2P downloads or free screensavers and such.
I googled the trojan that AVG blocked and could not find a reference. It is a good idea when you get something like this trojan on your computer to run other scans to make sure that it is completely gone and there isn't another piece of malware that downloaded this one.
Bit Defender Online scan and Super Antispyware would be two very good programs to use.
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#3 quietman7


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Posted 22 February 2007 - 12:57 PM

Trojans FAQs
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#4 Commander Gman

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Posted 27 February 2007 - 08:08 AM

Hi honu1
A trojan (lets say its the Big wooden made shaped horse during the siege of Troy)<i think its troy>used by the invaders,when you look at the outside,you think it is a masterpiece but in the inside comes the payload which is viruses,these trojans usually come when you download something for example a tool which makes your PC so fast,but in reality,it is a trojan it is only using the name of that tool or any means to fascinate you, to trick you that you're not downloading any virus some trojans however some are found in the wild while surfing (i dunno how&why but it is true just at least to inform you all) here are some examples of Popular trojans in the web:
Zlob--Commonly found with users
WinSpy---Fake deadly Anti-Spyware program,usually comes in a form of popups once the popup has appeared,close it immediately,it may also install itself without you noticing it
SpyFalcon--Fake deadly Anti-Spyware program,You will be directed into some black colored site that says is your pc secured? then tell you to get SpyFalcon or else it would start deleting your files
The only way to protect yourself is to get an Anti-Virus,Anti-Spyware and a Firewall that is good on detecting viruses with realtime protection and on its automatic updates which means,even if the trojan lands on to your system,The Anti-Virus automatically detects it then quarantines the trojan consider to protect your PC,you should consider buying full versions of these programs like:AVG,ZoneAlarm,Trend Micro and more...
----hope this information helps you -Commander Gman :thumbsup:

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#5 Master5270


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Posted 27 February 2007 - 03:08 PM

Here is a Full Description found on WikiPedia

In the context of computer software, a Trojan horse is a program that contains or installs a malicious program (sometimes called the payload or 'trojan'). The term is derived from the classical myth of the Trojan Horse. Trojan horses may appear to be useful or interesting programs (or at the very least harmless) to an unsuspecting user, but are actually harmful when executed. (See Social engineering.)

Often the term is shortened to simply trojan, even though this turns the adjective into a noun, reversing the myth (Greeks, not Trojans, were gaining malicious access).

There are two common types of Trojan horses. One, is otherwise useful software that has been corrupted by a cracker inserting malicious code that executes while the program is used. Examples include various implementations of weather alerting programs, computer clock setting software, and peer to peer file sharing utilities. The other type is a standalone program that masquerades as something else, like a game or image file, in order to trick the user into some misdirected complicity that is needed to carry out the program's objectives.

Trojan horse programs cannot operate autonomously, in contrast to some other types of malware, like viruses or worms. Just as the Greeks needed the Trojans to bring the horse inside for their plan to work, Trojan horse programs depend on actions by the intended victims. As such, if trojans replicate and even distribute themselves, each new victim must run the program/trojan. Therefore their virulence is of a different nature, depending on successful implementation of social engineering concepts rather than flaws in a computer system's security design or configuration.

However there is another meaning for the term 'Trojan Horse' in the field of computer architecture. Here it basically represents any piece of User Code which makes the Kernel Code access anything it would not have been able to access itself in the first place (i.e making the OS do something it wasn't supposed to be doing). Such security loopholes are called Trojan Horses.

:thumbsup: Hope this helps.

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