Breachesby GlyphKyushu Electric Power
Disclosed Jun 11, 202610,900,000 affectedUnverified
Kyushu Electric loses backup drive holding data of 10.9 million customers
Kyushu Electric Power said an external backup drive left in an unlocked server room cabinet went missing, holding names, addresses, phone numbers and usage data of 10.9 million customer accounts. It filed a police report and informed Japan's privacy regulator.
What is known
| People affected | 10,900,000 (as reported by the organization) |
|---|---|
| Disclosed | Jun 11, 2026 |
| Discovered | May 26, 2026 |
| Attack | Lost or stolen device |
| Data exposed | NamesAddressesPhone numbersOther |
| Sector | Energy · JP |
| Status | Unverified: not yet confirmed by an official notice, a filing or the organization |
Sources
Notices filed
History of this record
First recordedby seedSource
First seen 2026-09-25 (Research). Record counts are as reported. Not legal advice.