Technical Cyber Security Alert TA09-088A - US-CERT is aware of public reports indicating a widespread infection of the Conficker worm, which can infect a Microsoft Windows system from a thumb drive, a network share, or directly across a network if the host is not patched with MS08-067.
889abea95838642c06f272a52a5487dbaad89f603f848630737ddad4c4d9c103