Klez Virus Spreads Confidential Information

The latest variant of the Klez worm sometimes chooses to hitch a ride on sensitive documents, resulting in victims' confidential information spreading with the malicious program, Russian antivirus firm Kaspersky Labs said. Known as Klez.g, Klez.h and Klez.k, depending on the security advisory, the newest incarnation has spread worldwide, sending itself in e-mail messages with infected documents attached.