Ellen Nakashima Paul Sonne The Washington Post

Chinese government hackers have compromised the computers of a Navy contractor, stealing massive amounts of highly sensitive data related to undersea warfare - including secret plans to develop a supersonic anti-ship missile for use on U.S. submarines by 2020, according to American officials.

Chinese government hackers have compromised the computers of a Navy contractor, stealing massive amounts of highly sensitive data related to undersea warfare - including secret plans to develop a supersonic anti-ship missile for use on U.S. submarines by 2020, according to American officials.