Welcome to the Virus Encyclopedia of Panda Security.
|Effects: ||It disconnects the victim computers from the Internet.|
|Detection updated on:||June 3, 2003|
Flooder.ICQ.Zap is a Trojan that is used by hackers to disconnect IQC users from the Internet.
In order to do this, Flooder.ICQ.Zap sends a flood of data packets between the hackers and the victims. This excess of information causes the Internet server to disconnect affected users for using up its resources.
As Flooder.ICQ.Zap is not a virus in the strict sense of the word, it does not carry out any infection or spread to other computers. Its only effect is to disconnect affected users from the Internet.
In order to prevent themselves from being disconnected, the attacker loads another parallel session and starts sending pings (automatic response requests) to the targeted user through these two channels. The user under attack will respond with twice as many pongs (automatic responses to pings), which will cause an 'Excess flood' situation, thus disconnecting them for overloading the server resources.