Tosa Partners – Tosa Partners

May 31, 2026May 31, 2026

Cyber Incident at Shin-Nihon Certification Association May Have Exposed Customer Data

On May 11, 2026, the General Incorporated Foundation Shin-Nihon Certification Association announced that, as a result of a cyberattack against the organization, personal data—including customer information belonging to major non-life insurance companies for which it had been providing outsourced services—may have been leaked to external parties.

On the same day, the following insurance companies disclosed details of the incident:

Mitsui Sumitomo Insurance Company, Limited
Tokio Marine & Nichido Fire Insurance Co., Ltd.
Sompo Japan Insurance Inc..

April 18, 2026May 31, 2026

Takachiho Koheki Launches Token Security in Japan Through Exclusive Partnership

Takachiho Koheki announced on April 8, 2026, that it had entered into an exclusive distribution agreement with Token Security and begun offering Token Security, a new security platform focused on Non-Human Identities (NHIs).

The platform helps organizations establish the foundation required to deploy AI securely and with proper governance, without slowing down AI adoption. It also enables organizations to address emerging security risks associated with the growing operational use of agentic AI, providing advanced capabilities to manage and mitigate these new threats.