The N.S.A. calls its efforts more an act of “active defense” against foreign cyberattacks than a tool to go on the offensive. But when Chinese attackers place similar software on the computer systems of American companies or government agencies, American officials have protested, often at the presidential level. Among the most frequent targets of the N.S.A. and its Pentagon partner, United States Cyber Command, have been units of the Chinese Army, which the United States has accused of launching regular digital probes and attacks on American industrial and military targets, usually to steal secrets or intellectual property.

N.S.A. Devises Radio Pathway Into Computers - NYTimes.com Wednesday, January 15, 2014 @ 10:52pm