China in Focus as Cyberattack Hits Millions of U.S. Federal Workers

Hackers broke into U.S. government computers, possibly compromising the personal data of 4 million current and former federal employees, and investigators were probing whether the culprits were based in China.

http://www.reuters.com/article/us-cybersecurity-usa-idUSKBN0OK2IK20150605?irpc=932