When I read the title of the thread I immediately thought of Karla, and low and behold, if in the first line it doesn't mention George Smiley.
If Russia wasn't doing that, they would be the only ones.
Industrial Espionage is a huge problem in the United States even just between rival companies!
Here is a company that specializes in helping other companies keep their sensitive materials safe. You would be shocked at the type of secrets that go out in the trash.
http://www.shredit.com/
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U.Kdt.Hdb B. I. 28) This possibility of using the hydrophone to help in detecting surface ships should, however, be restricted to those cases where the submarine is unavoidably compelled to stay below the surface.
http://www.hackworth.com/