Destructive Trojans

The only function of these Trojans is to destroy and delete files.

This makes them very simple to use.

They can automatically delete all the core system files (for example, .dll, .ini or .exe files, and possibly others) on your machine.

The Trojan can either be activated by the attacker or can work like a logic bomb that starts on a specific day and time.

A destructive Trojan is a danger to any computer network.

In many ways, it is similar to a virus, but the destructive Trojan has been created purposely to attack you, and therefore is unlikely to be detected by your anti-virus software.

  >> Proxy Trojans

  These Trojans turn the victim's computer into a proxy server, making it available to the whole world or to the attacker alone.

It is used for anonymous Telnet, ICQ, IRC, etc., to make purchases with stolen credit cards, and for other such illegal activities.

This gives the attacker complete anonymity and the opportunity to do everything from YOUR computer, including the possibility to launch attacks from your network.

If the attacker's activities are detected and tracked, however, the trail leads back to you not to the attacker - which could bring your organization into legal trouble.

Strictly speaking, you are responsible for your network and for any attacks launched from it.

  >> FTP Trojans

  These Trojans open port 21 (the port for FTP transfers) and let the attacker connect to your machine via FTP.
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