2025 Cyber Incident Notification Letters
Potentially affected individuals have begun receiving direct notification letters regarding the 2025 cyber incident that the county experienced. If you received a letter from Anne Arundel County CAO Christine Anderson with a California return address, we can assure you that the letter is legitimate. It was sent on behalf of the county by IDX, a company based in California. The letter is intended to provide information about the event and additional resources for potentially affected individuals.
We have been notified that some individuals received a letter to their address for an individual they are unfamiliar with or information that is incorrect. We apologize for any errors, and have alerted the company that assisted the county with identifying potentially affected individuals and their contact information of these errors.
We encourage you to visit aacounty.org/cyber-incident for steps you can take to help protect your personal information and follow the provided guidance if you feel it is appropriate to do so. You can also call 1-866-200-0974 toll-free with any additional questions you may have.
2026 Data Privacy Event
On August 28, 2026 the county detected irregular activity on a limited subset of systems within the county computer network. Immediate action was taken to secure the network and determine the potential scope and source of this activity. It was determined that an unauthorized actor gained access to a limited number of systems and copied certain files from those systems. Presently, there is no indication the files have been used to commit any type of consumer fraud or identity theft or that this event was related to any previous cyber event. For more information, click here. click here.
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