Security NEXT reported a data breach at Tasuka (Japan) on 5 November 2026.
People affected
Not reportedno count given yet
Reported
5 November 2026News report
What was exposed 8
Phone numbers
Dates of birth
Names
Gender
Wage history
Attendance records
Reason for resignation
Start date
How it happened
How
Data left open (misconfiguration) There was a possibility that employees' personal information could be viewed from outside due to server configuration defectssourceOur translation from Japaneseサーバの設定不備により、外部から従業員の個人情報が閲覧できる可能性があった
Way in
カホエンタープライズ At Kaho Enterprise, to which server management and operations are outsourced, there was a problem with some server settingssourceOur translation from Japaneseサーバの管理運用を委託しているカホエンタープライズにおいて、サーバの一部設定で問題があった
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 Tasuka breach
Was Tasuka hacked?
Security NEXT reported a data breach at Tasuka (Japan) on 5 November 2026. How it happened, by the sources: misconfiguration, through カホエンタープライズ. It has been reported but not confirmed by Tasuka or an authority.
What data was exposed in the Tasuka breach?
Phone numbers, Dates of birth, Names, Gender, Wage history, Attendance records, Reason for resignation and Start date, 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 Tasuka data breach settlement?
No settlement open for claims is on record for Tasuka as of 15 November 2026. Every open settlement is listed with its deadline.
Is a letter, email or text about the Tasuka 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 Tasuka’s own site, or check the letter here.
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