Foreign governments are focusing their spying efforts on naval and marine technology that could provide the foundation for a next generation blue water navy. The revelation comes in the 2010 edition of Targeting U.S. Technologies: A Trend Analysis of Reporting from Defense Industry (PDF) The Internet continues to be the tool of choice, offering a low cost, high gain method to obtain sensitive or classified technology and information. Internet based spying and targeted attacks from East Asia and the Pacific region continued to be a major problem.
Source: https://threatpost.com/dod-report-says-spying-focused-naval-technology-010411/74816/