U.S. spy agencies mounted 231 offensive cyber-operations in 2011, documents show

Obama stated that if any nation conducted cyber attacks against the USA that such attacks constituted an "act of war."

http://www.forbes.com/sites/reuvencohen/2012/06/05/the-white...

Funny how the double standard rears its ugly head from time to time...

>“The Department of Defense does engage” in computer network exploitation, according to an e-mailed statement from an NSA spokesman, whose agency is part of the Defense Department. “The department does not engage in economic espionage in any domain, including cyber.”

Why not? It would be effective.