A fake “FBI Windows” virus is spreading online that may affect your PC with well-known Sober virus.
It comes in a mail that claims to come from either the Federal Bureau of Investigation (FBI), the Central Intelligence Agency (CIA) or German police agency BKA and that warns users they have been detected visiting illegal sites, reports the online edition of BBC News.
The subject line of the message also claims that “You visit illegal websites” or “Your IP was logged”.
If the user opens the questionnaire attached to the message, the virus becomes active and infects PC. FBI has denied having sent such mails. The US investigating agency said it does not engage in the practice of sending unsolicited e-mails to the public in this manner.
Anti-virus firms have claimed they caught millions of copies of the malicious programme, suggesting a lot of people have fallen for the fake warning.
Symantec increased threat level to 3 on November 22, 2005. Symantec article about W32.Sober.X@mm virus is here.