Data likely stolen in the hack included specifications of missile prototypes, according to Japanese media.

The focus on eradicating hackers from victimized organizations sets the new Cybersecurity Directorate apart from old defense-focused branches of the NSA.

In cybersecurity probes of Pentagon weapon systems in recent years, pen-testers were able to wrest control of systems with relative ease, according to GAO.

Col. Tim Brooks, the mission assurance division chief in the Department of Army Management Office, said a lack of dialogue between contractors is causing headaches as the military looks to harden its systems.