A suspicious website has been found asking victims of the breach at GMO Internet Group services to share information, according to a security company's investigation, NHK reported.
The site appeared before the breach was made public, NHK reported, suggesting someone was gathering victims' details while the company had not yet disclosed the incident. The security company's investigation found the site may be connected to the hackers behind the attack.
The breach involved unauthorized access to GMO Internet Group services. A GMO subsidiary had pointed out a vulnerability in its systems two years earlier, and the company plans to hold a news conference next week, on November 2, NHK reported.
NHK did not say who operated the site, how many victims it approached or what information it sought.