Hackers based in Turkey penetrated two U.S. Army Web servers and redirected traffic from those Web sites to other pages, including one with anti-American and anti-Israeli messages, according to a report in InformationWeek.

The hackers, who go by the group name "m0sted," breached a server at the Army's McAlester Ammunition Plant in Oklahoma on January 26 and a server at the U.S. Army Corps of Engineers' Transatlantic Center in Winchester, Va., on September 19, 2007, the report said.

Inve...