Electronic ticketing service teket exposes all members’ names and email addresses
Unauthorised access to Japanese electronic ticketing service teket’s member information management system exposed all members’ names and email addresses. Additional information exposed for some members included dates of birth, addresses, telephone numbers and ticket issuance codes. All services have been suspended since 5 November 2026, disrupting ticket sales, ticket display and event admission processing, while the number of people affected, the extent of the impact and when services will resume remain under investigation.
Key facts
- Affected organisation
- teket
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Names and email addresses of all members and additional personal information of some members exposed; all services suspended
- Cause / method
- Unauthorised access to the member information management system
- Location
- Japan
If your data was exposed
Exposed dataNamePhone numberEmailAddressDate of birth
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- teket’s services were suspended, disrupting ticket purchases and display as well as event organisers’ admission checks.
- The exposure of all members’ names and email addresses and additional personal information of some members was confirmed, and investigations into the number of people affected and when services would resume were under way.
- Twenty-seven user organisations that issued public announcements were identified, including local authorities, universities and performing arts groups, and ticket sales and admission processing were also affected.
Also affected by this incident
Possible data leak affects e-ticket buyers for Akita cultural venue events
↳ Knock-on damage from the teket incident · View original incidentInformation on people who purchased e-tickets for events hosted by cultural facilities in Akita Prefecture may have been leaked. The possible leak stems from an incident involving the e-ticketing service teket, but its specific extent and the response measures have not been confirmed.
Read on 秋田魁新報電子版 ↗Hanshin warns teket breach may have exposed up to 155 baseball clinic applications
↳ Knock-on damage from the teket incident · View original incident155Impact: Possible exposure of up to 155 baseball clinic application records
Hanshin announced on 13 November that information belonging to baseball clinic applicants may have been exposed following unauthorised access to the external electronic ticketing service teket. The announcement followed up on an incident teket detected on 5 November and covered up to 155 application records for a Hanshin event. Potentially exposed information includes all or some of applicants’ names, email addresses, dates of birth, ages, genders, addresses and phone numbers.
Read on Yahoo!ニュース ↗
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The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.