By May 4, 10,500 computers in Vietnam were infected with a new virus named Ymfocard, which attacks computers via Yahoo Messenger, according to Bkis Security, a prestigious network security agency in Vietnam.

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Thanks to early warning and the vigilance of YM users, the spread of this virus has been slowed down compared to the fast speed of infection during the recent holiday (April 30-May 2).

Ymfocard.Worm and its variations attack computers through messages in form of links sent via YM. If users open the links, an exe file will be downloaded to computers and the computers will be infected with virus when users open that file.

Once computers are attacked by this virus, YM will automatically send virus links to the list of friends.

Nguyen Lam