ReportedReported by fewer than three independent publishers, with no official finding.
Japanese internet giant GMO tells customers to shut down and disconnect PCs from the internet following data breach and ransomware threat
Japanese internet giant GMO Group has told its customers to scan their computers for viruses, back up all of their data, disconnect the devices from the internet and then shut them down. The announcement, which...
DII-2026-003552 sources ↓
What happened
Not publicly disclosed.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.
DataBreaches.net
Japanese internet giant GMO tells customers to shut down and disconnect PCs from the internet following data breach and ransomware threat
28 October 2026