NSA: Cookie Monster

“The National Security Agency’s Internet site has been placing files on visitors’ computers that can track their Web surfing activity despite strict federal rules banning most of them.

These files, known as “cookies,” disappeared after a privacy activist complained and The Associated Press made inquiries this week, and agency officials acknowledged Wednesday they had made a mistake. Nonetheless, the issue raises questions about privacy at a spy agency already on the defensive amid reports of a secretive eavesdropping program in the United States.”