The Chinese government reportedly hacked into the computers of a Navy contractor and stole massive amounts of highly sensitive data related to undersea warfare in January and February, according to The Washington Post. The 614 gigabytes of stolen data included plans to build a supersonic anti-ship missile for submarine use by 2020, information relating to cryptographic systems, and the development of the electronic warfare library. Sources did not identify the contractor involved, but did say they primarily worked with the Naval Undersea Warfare Center. The Navy is currently investigating the breach with the FBI, and the newspaper reports that the incident raises concerns about the Navys ability to oversee contractors tasked with developing cutting-edge weapons. This comes as President Donald Trump is attempting to seek Chinas support in the denuclearization of North Korea in the ramp up to the June 12 U.S.-North Korea summit in Singapore.