A PC associated with Monju (the Fast Breeder Reactor of the Japan Atomic Energy Agency) was infected by malware and there was a suspicion of information leaks. Some pointed out that the infection had possibly been led by the abuse of the. legitimate update of GOM Player, which made it big news. GOM Player is a free media player with popular video/audio codecs built-in, favored by many Japanese people. It is different from similar free media players in some notable points: it supports major file formats such as AVI, DAT, DivX, MPEG, WMV.”]
Source: https://securelist.com/abused-update-of-gom-player-poses-a-threat/58240/