✅ Official notice on file. Oakland Museum of California filed this data breach notice with the California Attorney General on Nov 12, 2025. Compare it with the letter you received: the official copy is linked below.
Oakland Museum of California reported a data breach caused by unauthorized access to its computer network. The information involved includes health insurance.
Key facts
| Incident type | Network intrusion |
|---|---|
| Data exposed | Health insurance |
| Letter sent | Nov 12, 2025 |
| Reported to California AG | Nov 12, 2025 |
| Company helpline | 1-800-405-6108 |
Free credit monitoring
Oakland Museum of California is offering 12 months of Cyberscout (TransUnion) at no cost to people who received the letter. Enroll at bfs.cyberscout.com/activate using the activation code printed on your letter.
What to do now
- Ask your insurer whether a new member ID can be issued, and check claims made under your policy.
- Get your free credit reports at AnnualCreditReport.com and look for accounts you do not recognize.
- Call the Oakland Museum of California helpline at 1-800-405-6108 if you have questions about your letter.
Timeline
- Nov 12, 2025 — Notification letters sent
- Nov 12, 2025 — Breach reported to the California Attorney General
Other recent data breaches
- Deposition Solutions, LLC data breach
- Mercadien, P.C. CPAs data breach
- Toyo Tire Holdings of Americas Inc. data breach
- STS Aviation Group data breach
- Alma Family Services data breach
Source: notification letter and filing submitted by Oakland Museum of California to the California Attorney General. BreachLetter is not affiliated with Oakland Museum of California. Details extracted from the official letter; always follow the instructions in your own copy.