Oakland-Museum-Of-California
bd_6b98a9ba5180df06 · schema v1 · pii pii-v1
Full breach record for Oakland-Museum-Of-California →Oakland Museum of California notified the California Attorney General of a data breach where an unauthorized actor accessed the network between July 10 and July 13, 2025. The museum observed unusual activity on July 13, 2025, and engaged cybersecurity specialists. Personal information, including names and addresses, was potentially accessed. The museum secured its environment, implemented additional security measures, and offered complimentary credit monitoring and identity theft protection services to affected individuals.
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Incident timeline
Jul 10, 2025
Begins
Jul 13, 2025
Discovered
Nov 12, 2025
Filed
vs. sector median
+9 wks slower
Linked disclosures
Why this link?Ransomware claims (1)
- Leak Sitelynxbd_fc97584f058fe9092025-08-29 · +74dVerified by operator
Regulatory filings (1) · sorted by filing gap
- Massachusetts State AGbd_a101ce5bc20db4eb2025-11-13 · +1dVerified by operator
Filing propagation · 2 filings · 2 states
View merged incident ↗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.