Attacks on U.S. computer networks could escalate from mere inconveniences to disasters that ruin companies or even kill people, according to the head of a cyber-security unit working with the U.S. government. Scott Borg, director of the Cyber Consequences Unit, or CCU, a Department of Homeland Security advisory group, said increasing intelligence “chatter” was pointing to possible criminal or terrorist schemes to destroy physical infrastructure such as power grids. Full Story