Observed arrival · 2026-10-12
Japan’s Personal-Data Breach Ledger
A Japanese-language register of publicly announced personal-data breaches, with reported counts, affected information, and links to official notices and news.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Japanese users checking affected services
- Worth noticing
- Listings distinguish when an incident was discovered from when it was disclosed, and link to official notices as well as news coverage.
Field notes
Entries distinguish incident discovery dates from disclosure dates, a useful detail when comparing timelines. The filters cover both organization sectors and types of exposed information, while individual records may expand to show further data categories and multiple source links. The page describes its scope as incidents publicly announced from 2026 onward; the supplied evidence does not establish independent verification or completeness.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue