Information related to communication networks involving Japan's Self-Defense Forces may have leaked after cyberattacks were conducted earlier this month against NTT Communications Corp., a source familiar with the case said Thursday.The Defense Ministry is investigating the case in cooperation with the company, an affiliate of Nippon Telegraph and Telecom Corp., suspecting that the possible leaks could affect operations of the SDF's core system, the source said.The suspected leaks involve information about communications equipment and layout of a Maritime Self-Defense Force facility in Yoko…READ FULL ARTICLE