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Kyushu Electric SSD loss

incident · incident:kyushu-electric-ssd-loss-2026

A Kyushu Electric subsidiary loses an unencrypted SSD with 10.9M customer records — reportedly Japan's largest personal-data breach.

Coverage timeline
1
first 2026-06-14 → last 2026-06-22
Peak priority
notable
1 notable
Sources cited
2
2 hosts
Sections touched
1
weekly-incidents-recap
Co-occurring entities
0
no co-occurrence
ATT&CK techniques
0
no mapped behavior yet

Hunting pivots

Story timeline

  1. 2026-06-22Insider and process failures — Munich school data, a lost SSD, and an NHS records caution
    weekly-incidents-recap

Where this entity is cited

  • weekly-incidents-recap1

Source distribution

  • heise.de1 (50%)
  • ico.org.uk1 (50%)

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Entries about Kyushu Electric SSD loss (1)

2026-06-22 · view entry permalink →

NOTABLE

Insider and process failures — Munich school data, a lost SSD, and an NHS records caution

Several of the week's incidents were not external intrusions at all. Munich's municipal IT subsidiary is investigating ~120,000 student records suspected on the darknet, with a terminated employee under investigation (Heise, 2026-06-17; daily 06-17). The Kyushu Electric SSD loss (§ 4) was a physical-custody failure. And the UK ICO closed a two-year criminal investigation into deliberate misuse of Catherine, Princess of Wales' medical records at The London Clinic with a formal caution (ICO, 2026-06-19; daily 06-19). The common thread: privileged-insider and data-custody controls — offboarding, removable-media encryption, and access auditing on sensitive records — are as consequential as perimeter defence.

incident22 Jun 00:14Zmulti-sourceOpen finding ↗