Nishiyamato Academy
bd_49723d32e683f91d · schema v1 · pii pii-v2
Full breach record for Nishiyamato Academy →Nishiyamato Academy notified the California Attorney General of a data security incident. On March 27, 2026, the organization became aware of unauthorized access to its computer network. An investigation revealed that between March 25 and March 28, 2026, files containing personally identifiable information, including full names, were potentially accessed. The organization engaged external cybersecurity professionals and is providing complimentary identity monitoring services to affected individuals. The specific method of unauthorized access was not disclosed.
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Incident timeline
Mar 25, 2026
Begins
Mar 27, 2026
Discovered
Sep 30, 2026
Filed
Linked disclosures
Why this link?Regulatory filings (2) · sorted by filing gap
- Indiana State AGbd_86591ce5423451532026-09-30Verified
- Massachusetts State AGbd_5057d8aa156c7d362026-09-01 · +29dVerified
Filing propagation · 3 filings · 3 states
View merged incident ↗Pattern: first filing Sep 1 (MA), last Sep 30 (CA) — 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.