Defense Secretary Donald Rumsfeld yesterday issued a message directing military component heads to redouble Internet security efforts to prevent enemies such as al Qaeda from gaining access to sensitive information. Rumsfeld says "for official use only" and other sensitive, unclassified information -- including concepts of operations, operational plans and standard operating procedures -- "continues to be found on public Web sites," indicating that too often data posted by DOD "are insufficiently reviewed for sensitivity and/or inadequately protected. "Over 1,500 discrepancies...