The U.S. military has assembled the world's most formidable hacker posse: a super-secret, multimillion-dollar weapons program that may be ready to launch bloodless cyberwar against enemy networks -- from electric grids to telephone nets.

The group's existence was revealed during a U.S. Senate Armed Services Committee hearing last month. Military leaders from U.S. Strategic Command, or Stratcom, disclosed the existence of a unit called the Joint Functional Component Command for Network Warfare, or JFCCNW.