Security NEXT reported a data breach at Denies Japan (Japan) on 5 November 2026.
People affected
Not reportedno count given yet
Reported
5 November 2026News report
What was exposed 5
Email addresses
Dates of birth
Gender
Prefecture of residence
App member codes
How it happened
How
Data left open (misconfiguration) In the system processing related to the transition from the old app to the new app, a third party illegally created authentication informationsourceOur translation from Japanese旧アプリから新アプリへの移行に関するシステム処理において、認証情報を第三者が不正に作成
News reports are read by an AI model; every fact taken from an article was checked word for word against it, and anything it could not find was dropped. · Corrections and changes
Questions about the Denies Japan breach
Was Denies Japan hacked?
Security NEXT reported a data breach at Denies Japan (Japan) on 5 November 2026. How it happened, by the sources: misconfiguration. It has been reported but not confirmed by Denies Japan or an authority.
What data was exposed in the Denies Japan breach?
Email addresses, Dates of birth, Gender, Prefecture of residence and App member codes, by the notices and reports on this page.
How do I know if I was affected?
Organisations normally tell the people whose data was involved, by letter or email, and that notice says what of yours was in it. We cannot look up individual people. If you got a notice, check that it is real, then follow the steps on this page.
Is there a Denies Japan data breach settlement?
No settlement open for claims is on record for Denies Japan as of 15 November 2026. Every open settlement is listed with its deadline.
Is a letter, email or text about the Denies Japan breach real or a scam?
A real notice names the breach, says what data was involved and never asks for a password, a code or a payment. Criminals often send fake notices after a breach is in the news. Do not use links or phone numbers in the message: go to Denies Japan’s own site, or check the letter here.
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