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MonitoringWashingtonFiled March 3, 2026

Understanding your Brown Advisory LLC data breach notification letter

If a Brown Advisory LLC letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.

Why you received this letter

Brown Advisory LLC, an investment management and wealth advisory firm, filed a data breach notification with the Washington Attorney General on March 3, 2026, indicating a cybersecurity incident. The breach may have exposed a wide range of personal and financial information for affected individuals.

Information the filing reports as involved

  • Full Name
  • Social Security Number
  • Date of Birth
  • Financial Account Number
  • Routing Number
  • Tax Identification Number
  • Investment Portfolio Details
  • Mailing Address
  • Email Address
  • Phone Number

What to do after the letter

  1. Confirm the notice is genuine

    A legitimate Brown Advisory LLC notice references the specific incident reported to the Washington Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.

  2. Keep the letter — it is your proof of connection

    The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.

  3. Protect your accounts and credit

    Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.

  4. Check the record against the public filing

    You can verify the Brown Advisory LLC incident against the filing reported to the Washington Attorney General. This registry summarizes what was filed; it does not provide legal advice.

This page summarizes a data breach reported to the Washington Attorney General for informational purposes. DataBreachInformation.com is a neutral reference registry and does not provide legal advice.

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