Kyushu Electric Power missing drive exposing customer data
Data Leak
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Kyushu Electric Power disclosed a missing external storage device that may expose customer data for up to 10.9 million accounts. The drive held names, service locations, electricity usage data, and telephone numbers, and it has not been recovered. The company is notifying affected customers and has reported the matter to police and regulators.
Related Happenings
METI orders Kyushu Electric to report incident details by July 8
Public Sector Action
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First: 12.06.2026 02:14
Last: 12.06.2026 02:14
Sources 1
How related:
NHK One reported that the Japanese Ministry of Economy, Trade, and Industry has given the firm until July 8 to report all the details about the incident and the preventative measures taken.
About this happening:
The **Japanese Ministry of Economy, Trade, and Industry** ordered **Kyushu Electric Power** to report full incident details and preventative measures by **July 8**, adding formal...
METI orders Kyushu Electric to report incident details by July 8
Public Sector ActionHow related: NHK One reported that the Japanese Ministry of Economy, Trade, and Industry has given the firm until July 8 to report all the details about the incident and the preventative measures taken.
About this happening: The **Japanese Ministry of Economy, Trade, and Industry** ordered **Kyushu Electric Power** to report full incident details and preventative measures by **July 8**, adding formal...
Timeline
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12.06.2026 02:14 1 articles · 2h ago
Kyushu Electric uses an external storage device for backups
Untyped PhaseDue to capacity constraints, Kyushu Electric Power Co., Inc. used an external storage device for backup tasks and stored the drive in a server room cabinet protected by multiple physical security layers.
Show sources
- Japanese energy firm loses drive with data of 10.9 million clients — www.bleepingcomputer.com — 12.06.2026 02:14
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12.06.2026 02:14 1 articles · 2h ago
IT staff discover the backup drive missing from a server room cabinet
Detection Ioc UpdateWhen IT staff went to retrieve the external storage device on May 26, they found the server room cabinet unlocked and the drive missing, revealing that the backup media could not be located.
Show sources
- Japanese energy firm loses drive with data of 10.9 million clients — www.bleepingcomputer.com — 12.06.2026 02:14
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12.06.2026 02:14 1 articles · 2h ago
Kyushu Electric files a police report over the missing drive
Legal Policy Action UpdateKyushu Electric Power Co., Inc. filed a police report on June 4 after suspecting someone had removed the drive, and media reports said 57 people had access to the server room.
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- Japanese energy firm loses drive with data of 10.9 million clients — www.bleepingcomputer.com — 12.06.2026 02:14
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12.06.2026 02:14 2 articles · 2h ago
Kyushu Electric discloses a physical security incident affecting 10.9 million accounts
Initial DisclosureKyushu Electric Power Co., Inc. disclosed a physical security incident involving a missing external storage device and said the missing drive may contain customer names, service location addresses, electricity usage data, telephone numbers, and other related information affecting up to 10.9 million accounts. The company also reported the incident to Japan’s Personal Information Protection Commission and relevant government authorities.
Show sources
- Japanese energy firm loses drive with data of 10.9 million clients — www.bleepingcomputer.com — 12.06.2026 02:14
- Japanese energy firm loses drive with data of 10.9 million clients — www.bleepingcomputer.com — 12.06.2026 02:14