Military data possibly stolen in Mitsubishi Heavy hacking: Asahi

The logo of Mitsubishi Heavy Industries Ltd. is seen on the company headquarters in Tokyo September 20, 2011.

TOKYO (Reuters) - Military data on weapons including warplanes and information on nuclear power plants may have been stolen during the cyber attack against Mitsubishi Heavy Industries that became apparent in August, the Asahi newspaper reported on Monday.

It is unclear if the military data, which includes information on defense equipment that Japan's Defense Ministry had ordered, is deemed as sensitive defense information, the Asahi said , citing a source close to the matter.

Mitsubishi Heavy, Japan's biggest weapons supplier, said last month that network information such as IP addresses may have been leaked but that it had so far not confirmed any leaks on its products or technologies.

(Reporting by Yoko Kubota; Editing by Tomasz Janowski)