The Japanese Defense Ministry and the Self-Defense Forces discovered in September that their shared communication network had suffered a cyber attack that enabled a hacker to penetrate the Ground Self-Defense Force’s computer system, Ministry sources said on Sunday. Some information may have been leaked in the incident, with an organized attacker such as a nation state strongly suspected, but the full scope of the damage is not clear, the sources said.
Ground Self-Defense Force’s computer system has been cyber attacked
