Anabuki Kosan: ransomware attack on the group
Server encryption detected February 3 was disclosed February 4. The April 3 report traced intrusion to a network-device vulnerability, followed by administrator takeover and ransomware on multiple servers. Some customer, applicant and employee information leaked; scope and counts remained under investigation. Business continued. JOINT Alpha member data and card data, which it did not hold, were excluded.
Disclosed
2026-02-04
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Detected 2026-02-03
- Disclosed 2026-02-04
- 1 days
Attack or cause
- Method
- [Ransomware][Intrusion]
- Impact
- [Data leak][Service outage]
- Entry point
- Unknown
Data exposed or at risk
Organizations involved
[Breached][Major]Kagawa, TakamatsuReal estate and rental
Anabuki Kosan Inc.
Sources
- [1][Official]ランサムウェア被害発生のお知らせAnabuki Kosan Inc. · 2026-02-04
- [2][Official]情報流出に関するお知らせとお詫び(第4報)Anabuki Kosan Inc. · 2026-04-03