http://www.wsj.com/articles/penn-sta...ked-1431804110

Hackers apparently based in China have had access to Pennsylvania State University’s engineering school computers for over two years, the university disclosed on Friday after a lengthy analysis by federal and private investigators.

The breach potentially has exposed research pertaining to technology for the U.S. Defense Department.

The university said it would take the affected computer network offline for several days to root out the hackers.

“This was an advanced attack against our College of Engineering by very sophisticated threat actors,” Penn State President Eric Barron said in a letter to students and faculty.