✅ Official notice on file. Lyon Management Group, Inc. filed this data breach notice with the California Attorney General on Mar 28, 2025. Compare it with the letter you received: the official copy is linked below.
Lyon Management Group, Inc. reported a data breach caused by unauthorized access to its computer network.
Key facts
| Unauthorized access | Mar 14, 2024 – Mar 15, 2024 |
|---|---|
| Incident type | Network intrusion |
| Letter sent | Mar 28, 2025 |
| Reported to California AG | Mar 28, 2025 |
| Company helpline | 1-833-998-5497 |
Free credit monitoring
Lyon Management Group, Inc. 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
- Get your free credit reports at AnnualCreditReport.com and look for accounts you do not recognize.
- Call the Lyon Management Group, Inc. helpline at 1-833-998-5497 if you have questions about your letter.
Timeline
- Mar 14, 2024 — Unauthorized access begins
- Mar 28, 2025 — Notification letters sent
- Mar 28, 2025 — Breach reported to the California Attorney General
Other recent data breaches
- Deposition Solutions, LLC data breach
- Mercadien, P.C. CPAs data breach
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- STS Aviation Group data breach
- Alma Family Services data breach
Source: notification letter and filing submitted by Lyon Management Group, Inc. to the California Attorney General. BreachLetter is not affiliated with Lyon Management Group, Inc.. Details extracted from the official letter; always follow the instructions in your own copy.