North Korea hackers behind Japan’s massive GMO data leak, investigation finds

An analysis by Japan’s GMO Internet Group found that a North Korea-linked hacking group was likely behind the cyberattack on the company last month.

The company appears to have already reported the matter to the government and will now focus on determining the full circumstances.

Kyodo News, working with security experts, also found that five IP addresses used to access a website claiming responsibility for the attack matched those previously used by a North Korean hacking group.