Sober.Z Virus

Sober spread in messages purportedly from the FBI, CIA, and other governments´ law enforcement agencies, as well as in messages promising video clips of socialite Paris Hilton. The variant is dubbed Sober.x, Sober.y, or Sober.z. The E-mail security provider Postini claims to have quarantined more than 218 million Sober-infected messages in the last seven days, more than four times the 50 million-message average that it blocks in a run-of-the-mill month. At the peak of the outbreak, one in every 13 e-mails was a Sober-infected message.