Nishiyamato Academy
bd_5057d8aa156c7d36 · schema v1 · pii pii-v2
Full breach record for Nishiyamato Academy →Nishiyamato Academy notified individuals of unauthorized access to its computer network. The organization became aware of the incident on March 27, 2026. Investigation revealed that between March 25 and March 28, 2026, files containing full names and potentially other personally identifiable information were subject to unauthorized access or acquisition. The organization engaged external cybersecurity professionals and is providing complimentary identity monitoring services to affected individuals.
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Incident timeline
Mar 25, 2026
Begins
Mar 27, 2026
Discovered
Sep 1, 2026
Filed
Linked disclosures
Why this link?Regulatory filings (2) · sorted by filing gap
- California State AGbd_49723d32e683f91d2026-09-30 · +29dCandidate
- Indiana State AGbd_86591ce5423451532026-09-30 · +29dVerified
Filing propagation · 3 filings · 3 states
View merged incident ↗Pattern: first filing Sep 1 (MA), last Sep 30 (IN) — a 29-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.