Uji Hospital: ransomware encrypted some data and logs of data sent outside mean a leak cannot be ruled out
Unauthorized access occurred in the early hours of January 6 and some data in the system was encrypted by ransomware. A leak cannot be fully ruled out.
Disclosed
2023-06-12
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
What happened
In the early morning it confirmed an attack by a third party against the corporation. Some data in the system was encrypted by ransomware and the attacker left a threatening message. [1] [2]
It announced the possibility of an information leak caused by the unauthorized access. The announcement is published as two image files. [1] [2]
Impact
The investigation found a history of communication sending data to the outside, so the possibility of an information leak cannot be fully ruled out. The range and number of information leaked have not been disclosed. [2]
Timeline
- Started, Detected 2023-01-06
- Disclosed 2023-06-12
- 157 days
Attack or cause
- Method
- [Ransomware]
- Impact
- [Service outage][Data leak]
- Entry point
- Unknown
Data exposed or at risk
–
Organizations involved
[Breached][Major]Kyoto, UjiMedical care and welfare
Ajirogi Kai (Uji Hospital)
Sources
- [1][Official]不正アクセスによる情報流出の可能性に関するお知らせとお詫び – 社会福祉法人 あじろぎ会 宇治病院Ajirogi Kai · 2023-06-12
- [2][News]宇治病院へランサムウェア攻撃、外部へデータ通信履歴「情報流出の可能性を完全には否定しきれない」ScanNetSecurity · 2023-06-28 08:05