GMO Internet checks posted data after Onamae cyber attack
GMO Internet is checking whether customer details posted online after its Onamae cloud desktop was breached are genuine, and has told users to reset passwords.
GMO Internet is verifying alleged customer and business data that a suspected attacker posted after a breach of its Onamae cloud desktop service.
The firm shut Onamae Desktop Cloud on 21 October after finding unauthorized access and said hackers demanded about 8 billion yen (roughly $50 million).
About 27,000 servers may be affected; customers were told to reset passwords amid reports of unauthorized operations on trading accounts.
The company reported the incident to Japanese police, offered compensation and alternative service, and began collecting customer devices to check for malware.
GMO has not publicly linked the Onamae breach to the Artex AI penetration-testing tool its cybersecurity unit flagged in separate Japan-focused hacks.