Yellow Hat web service booking system possible member data breach
Add to my breach checkMade public · 1,801,499 Yellow Hat members at most
What leaked4
Hard to replace
- Mobile number
- Email address
- Other profile data
Permanent
- Full name
- Mobile numberphone number · type not stated
- Other profile datamember number
To-dos1 · about 5 min in all
What happened next7 events
- UndetectedNone on record
- Response 7 eventsNo individual notice on record · Back to latest
- RemedyNone on record
- PenaltyNone on record
- DisputesNone on record
Response: 7 events
Back to latest- Opened a dedicated free phone line · every day until 12 October, weekdays from 13 October
- By 28 August, said it had finished security fixes to the system
- By 28 August, consulted the police
- By 28 August, reported to the Personal Information Protection Commission
- Apologised in its notice
- Announced that data of up to 1,801,499 members may have leaked
- Detected unauthorised access to the web service booking system in the morning and cut its external connections
- Company
- Yellow Hat
- Company detected it
- Made public
- Notice
- Possible leak
- Affected
- 1,801,499 Yellow Hat members at most · possible leak; company notice
Sources
- イエローハット company notice (opens in a new tab)checked November 3, 2026