Incidents on Sep 30, 2026

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Incidents on Sep 30, 2026
Date	Target	Summary	Classification	Source links
Sep 30, 2026 LEAK-101	G-PLAN INC. (G Point)	B Up to about 70,000 recordsAn anomaly was detected in the G Point system on September 25, 2026, and unauthorized access from outside was found. Up to about 70,000 member identifiers may have leaked, and the system and related services are suspended.	Unauthorized access & data leakPossibleOfficial statement	g-plan.net itmedia.co.jp
Sep 30, 2026 LEAK-099	Benefit One Inc.	B 13,460 peopleA defect in the Benefit One Platform survey function showed employee information of other companies and organizations when survey results were downloaded. 13,460 people at 2,322 companies and organizations are covered; one contact person downloaded the data.	Misdelivery & accidental exposureConfirmedOfficial statement	corp.benefit-one.co.jp itmedia.co.jp
Sep 30, 2026 LEAK-100	Sagawa Express Co., Ltd.	Unauthorized access to the website's package inquiry service was confirmed on September 30, 2026, and personal information of shippers and recipients, fare-contract customers and Smart Club members may have leaked. The number is under investigation.	Unauthorized access & data leakPossibleOfficial statement	www2.sagawa-exp.co.jp itmedia.co.jp
Sep 30, 2026 LEAK-131	Shudo Gakuen	On September 26, 2026, unauthorized third-party access to a server managed by the school corporation was confirmed. Account information of business partners and names, addresses, phone numbers and account details of staff, some students and external lecturers may have been leaked.	Unauthorized access & data leakPossibleOfficial statement	shudo-u.ac.jp

Incidents on Sep 30, 2026