www.SoftStimulatorsInc.us

Recent Posts

HOW TO PROTECT YOUR NETWORK FROM TROJANS

So how do you protect your network from Trojans?

A common misconception is that anti-virus software offers all the protection you need.

The truth is anti-virus software offers only limited protection.

Anti-virus software recognizes only a portion of all known Trojans and does not recognize unknown Trojans.

Although most virus scanners detect a number of public/known Trojans, they are unable to scan UNKNOWN Trojans.

This is because anti-virus software relies mainly on recognizing the signatures of each Trojan.

Yet, because the source code of many Trojans is easily available, a more advanced hacker can create a new version of that Trojan, the signature of which NO anti-virus scanner will have.

If the person planning to attack you finds out what anti-virus software you use, for example through the automatic disclaimer added to outgoing emails by some anti-virus engines, he will then create a Trojan specifically to bypass your virus scanner engine.

Apart from failing to detect unknown Trojans, virus scanners do not detect all known Trojans either - most virus vendors do not actively seek new Trojans and research has shown that virus engines each detect a particular set of Trojans.

To detect a larger percentage of known Trojans, you need to deploy multiple virus scanners; this would dramatically increase the percentage of known Trojans caught.

To effectively protect your network against Trojans, you must follow a multi-level security strategy:

  You need to implement gateway virus scanning and content checking at the perimeter of your network for email, HTTP and FTP - It is no good having email anti-virus protection, if a user can download a Trojan from a website and infect your network.

You need to implement multiple virus engines at the gateway - Although a good virus engine usually detects all known viruses, it is a fact that multiple virus engines jointly recognize many more known Trojans than a single engine.

You need to quarantine/check executables entering your network via email and web/FTP at the gateway.

You have to analyze what the executable might do

HOW TO PROTECT YOUR NETWORK FROM TROJANS HOW TO PROTECT YOUR NETWORK FROM TROJANS Reviewed by Shirley Bloggastron on 8:47 AM Rating: 5

No comments:

Note: Only a member of this blog may post a comment.

Music

Powered by Blogger.