TeeTime Golf School Guide: applicant data possibly viewed in an intrusion
An intrusion into Golf School Guide may have exposed applicant and school information. No data removal or alteration has been confirmed.
Disclosed
2026-10-30
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
What happened
A system vulnerability was exploited to access the administration screen in August 2026. TeeTime learned of it in October and disclosed it on 30 October; it did not give exact incident or detection dates. [1]
Impact
Names, email addresses, phone numbers and other application data, along with some listed-school information, may have been viewed. Data removal and alteration have not been confirmed, and no count was published. [1]
Response
TeeTime blocked the access route, reported to the Personal Information Protection Commission and emailed affected users individually. It is implementing preventive measures. [1]
Timeline
- Disclosed 2026-10-30
- 1 days
Attack or cause
- Method
- [Web app exploit]
- Impact
- [Data leak]
- Entry point
- Web app
Data exposed or at risk
Services hit
Organizations involved
[Breached][Major]Tokyo, ToshimaInformation and communications
TeeTime Inc.
Sources
- [1][Official]「ゴルフスクールガイド」への不正アクセスに関するお詫びとお知らせTeeTime · 2026-10-30