It's called digital espionage.
Chinese hackers breached the online defenses of the U.S. Chamber of Commerce last year, accessing information about its 3 million members and stealing thousands of e-mails. It was one of the boldest infiltrations ever.
Cyber attacks like this one cost the U.S. economy billions every year.
On American Morning this morning, "Popular Mechanics" senior news editor Joe Pappalardo talks about the magazine's cover story on hacks from foreign countries and explains what the possible motivations could be behind these attacks.