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Yakiniku King official app member data breach

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Made public · 10,788,963 official app member records

What leaked4

Hard to replace

  • Mobile number
  • Email address
  • Other profile data

Permanent

  • Full name
  • Mobile numberphone number · type not stated
  • Full namethe name registered in the app
  • Other profile datamember number

To-dos1 · about 5 min in all

  1. Know the scam pattern: calls and texts that cite these leaked detailsabout 5 minfreeLimits harm from: phishing messages

What happened next8 events

  1. Undetected 2 events0 days · show events
  2. Response 6 eventsNo individual notice on record · Back to latest
  3. RemedyNone on record
  4. PenaltyNone on record
  5. DisputesNone on record

Response: 6 events

Back to latest
  1. Decided that its 11 group apps will stop holding names and phone numbers, with a new system planned for the first half of 2027
  2. Monogatari Corporation: no case of the leaked information being made public or used without authorisation confirmed so far
  3. Filed a notice on the TSE: 10,788,963 of 10,808,784 registered app-user records leaked
  4. Published an apology and the facts on the Yakiniku King website
  5. Confirmed that member data had leaked, after cutting the connection and adding defences
  6. Reported the unauthorised access to the police · stated as done by 20 October
Company
Yakiniku King
When it happened
Company detected it
Made public
Affected
10,788,963 official app member records · of 10,808,784 registered users

Sources