The Defense Security Service has published its 2013 annual report about the targeting of U.S. technology by foreign entities.
Targeting U.S. Technologies: A Trend Analysis of Cleared Industry Reporting uses "information contained in reports from industry to develop analytical assessments that articulate the threat to U.S. information and technology..." Key findings include that electronics was "East Asia and the Pacific's most commonly reported targeted technology, with attempts aimed at specific sensitive components rather than complete systems." U.S. defense technology may be the target of South and Central Asia while Near East entities tend to use "complicated and opaque procurement networks to attempt to avoid export-control regulations." Europe and Eurasia ranked fourth in collection attempts, but contain some of the most skillful collectors targeting U.S. information and technology.
Reports from 2008 through 2013 are available from the Defense Security Service's Counterintelligence Report's page.