Kobo: unauthorized access to the Hassha Orai Net partner API server
On 15 October, Kobo, which runs the Hassha Orai Net highway bus booking site, said its partner API server, used to provide booking services to bus operators, received suspicious access between 16 and 19 September and found traces of booking data being sent out. It detected this on 13 October. Up to 8,341 bookings of 5,614 people (548 bookings of 448 people made on Hassha Orai Net itself) for travel between 16 July and 29 November are affected: names in katakana, phone numbers and trip details.
Disclosed
2026-10-15
Organizations involved
1
Leaked or at risk
8.3K
8,341
Downtime
Unknown
Timeline
- Started 2026-09-16
- Detected 2026-10-13
- Disclosed 2026-10-15
- 29 days
Attack or cause
- Method
- [Intrusion]
- Impact
- [Data leak]
- Entry point
- API
Data exposed or at risk
Services hit
Organizations involved
[Breached][Major]Saitama, KawaguchiInformation and communications8,341 leaked
Kobo Co., Ltd.
Sources
- [1][Official]【お詫びとご報告】「発車オーライネット」連携用 API サーバーへの不正アクセスによる個人情報流出についてKobo · 2026-10-15
- [2][News]「発車オーライネット」に不正アクセス 最大8,341件の予約情報が流出の可能性TRAICY · 2026-10-16