Digital Agency reports possible exposure of old inquiry information
Agency announcement: October 22; Kyodo report: October 23. The form submissions cover May 2021–March 2023.
IllustrationJapan's Digital Agency disclosed possible exposure of historical form submissions through unauthorized access to Studio's cloud environment. The October 22 announcement was also reported on October 23.
Read for 8 seconds to inform recommendations.Reading history & counting settings
Agency announcement: October 22; Kyodo report: October 23. The form submissions cover May 2021–March 2023.
Historical form records are in scope
The notice lists up to 8,833 general inquiries and 3,661 inquiries about the vaccination-certificate app, alongside recruitment and participation forms. Fields vary and can include names, email addresses and inquiry text. This is not an announcement that all app users' vaccination records were exposed.
Possibility is different from confirmed misuse
The notice also includes 35 Studio accounts. Record counts are not necessarily unique people. At publication, the agency had not confirmed secondary harm and warned about suspicious email, calls and SMS impersonating official organizations.

Sources & further reading
Our own summary based on the public information below.
- デジタル庁:Studioへの不正アクセスによる漏えいの可能性 ↗Source publication date: 2026-10-22
- 共同通信:デジタル庁、1万件超漏えいか(ライブドア掲載) ↗Source publication date: 2026-10-23
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