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2026 TeamSpirit — data leak; 28,824 records from a dev server

2026 28.8K records affected Share on X

Data compromised

28,824 unique personal-information records (deduplicated, as of the notice). 35 records are sensitive personal information (要配慮個人情報); those people get individual contact. Current and former TeamSpirit customers: names, emails, login IDs, identifiers, some inquiry records, some employee attendance records held outside production for service support, and some contract/environment data. Leads: identifiers and company names. Staff including leavers: names, employee numbers, work emails, join/leave dates, birthday month-day, internal IDs, business-system records. Production attendance data on the TeamSpirit service was not accessed. No public dump or misuse found as of 6 November.

Technical writeup

Official notice 6 Nov 2026 16:00 JST. Stolen attendance snippets are copies in a company-managed support environment, not the live SaaS tenant. Credential invalidation largely done. Contacts start 6 Nov; this page stands in when TeamSpirit has no address.

Root cause

On 27 October 2026 a third party logged into a software-development server, then used credentials stored there to pull data from a cloud environment TeamSpirit uses. Not a zero-day. The company says misconfiguration and information handling on the development server combined. That server was stopped the same day. PPC notified 30 October.

References