Incidents on Oct 1, 2026

Publication date: Dates are source publication dates (JST), not occurrence dates.

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Incidents on Oct 1, 2026
Date	Target	Summary	Classification	Source links
Oct 1, 2026 LEAK-103	Japan Atomic Energy Agency	D 175 peopleOn September 25, 2026, 2,419 files were illegally downloaded from a research support site for the JRR-3 research reactor, which runs on a cloud platform, and leakage was confirmed of 367 files covering 175 users, including ID images and health examination results.	Unauthorized access & data leakConfirmedOfficial statement	jaea.go.jp itmedia.co.jp
Oct 1, 2026 LEAK-143	Ticketplus "Tiketpla"	D Up to 107 peopleAfter a change to web page cache settings on September 28, 2026, users who accessed the same page at the same time could see another user's information, from 7:00 on September 28 to 22:35 on September 29. Up to 107 people may have had their own information shown to others, and up to 322 people may have seen other customers' information. On application and purchase screens this covered names, email addresses, addresses, phone numbers and the last four digits of credit card numbers. No display of full card numbers or passwords, and no unauthorized access or database tampering, has been confirmed.	Misdelivery & accidental exposurePossibleOfficial statement	ticketplus.co.jp
Oct 1, 2026 LEAK-102	Lashinbang Co.,Ltd.	The company's service was accessed without authorization from September 14 to 16, 2026, and names, ID document types and numbers, bank account details entered at buyback and other data may have leaked.	Unauthorized access & data leakPossibleOfficial statement	lashinbang.com itmedia.co.jp

Incidents on Oct 1, 2026