SPRIX: ransomware encrypted some servers of its subsidiary Shonan Seminar

On August 21 it confirmed that some servers of its subsidiary Shonan Seminar were encrypted. The investigation found no leak of information, including personal data.

Disclosed

2023-08-23

Organizations involved

Leaked or at risk

Unknown

Downtime

Unknown

What happened

2023-08-21
It confirmed that some servers of Shonan Seminar had been encrypted by ransomware. It started an investigation with outside experts, set up a task force and notified the police. It also reported to the Personal Information Protection Commission. [1] [3]
2023-08-23
It announced the case. It cut some affected internal systems off from the servers. The website and mail system run as usual. No leak has been confirmed. [1] [3]
2023-10-16
A forensic investigation by an outside expert organization found no fact that various information, including personal data, leaked. Based on the result it filed a final report with the Personal Information Protection Commission. [2]

–

[Breached][Moderate]Tokyo, ShibuyaEducation and learning support
Shonan Seminar Co., Ltd.
[Breached][Moderate]Niigata, NagaokaEducation and learning support
SPRIX Ltd.
The parent of Shonan Seminar. It made the announcement in a disclosure to the Tokyo Stock Exchange.

						Note
Shonan Seminar Co., Ltd.	[Breached]	[Moderate]	Tokyo, Shibuya	Education and learning support	Unknown
SPRIX Ltd.	[Breached]	[Moderate]	Niigata, Nagaoka	Education and learning support	Unknown	The parent of Shonan Seminar. It made the announcement in a disclosure to the Tokyo Stock Exchange.