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MonitoringWashington AG filing · March 3, 2026

Brown Advisory LLC Data Breach Reported in Washington

Brown Advisory LLC reported a data breach to the Washington Attorney General on March 3, 2026, which may have exposed a wide range of sensitive client financial and personal information. This incident could leave affected individuals vulnerable to fraud and identity theft, underscoring the importance of understanding the potential impact.

This breach is real, not a scam. Brown Advisory LLC officially reported it to the Washington Attorney General on March 3, 2026.

Reviewed by David S. Harris, Esq., data breach and class action attorney (Florida Bar No. 0112739). Free consultation: 786-306-7278

Received a Brown Advisory LLC notification letter? Find out in minutes if you qualify for compensation.

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State
Washington
Reported
March 3, 2026

What may have been exposed

  • 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

Brown Advisory LLC, an investment management firm, recently disclosed a data breach to the Washington Attorney General, with the filing date recorded as March 3, 2026. This report indicates that sensitive client information entrusted to the firm was compromised in a security incident.

The compromised data types are extensive, including Full Name, Social Security Number, Date of Birth, Financial Account Number, Routing Number, Tax Identification Number, Investment Portfolio Details, Mailing Address, Email Address, and Phone Number. Given Brown Advisory LLC's role in managing high-value assets, the exposure of such comprehensive financial and personal identifiers is particularly concerning.

For individuals whose data was affected, this breach carries significant risks. The exposure of core identifiers like Social Security Numbers and financial account details can lead to heightened vulnerability to financial account takeover, fraudulent credit applications, and sophisticated scams. The inclusion of Investment Portfolio Details could also make victims targets for highly personalized phishing and social engineering attacks.

Financial institutions like Brown Advisory LLC are legally obligated to implement robust security measures to protect client data. The occurrence of a data breach suggests a potential failure in these critical safeguards, raising questions about whether the company met its duty to secure sensitive personal and financial information.

Receiving a data breach notification letter from Brown Advisory LLC means your information was directly involved in this security incident. It is important to understand the potential consequences and your legal standing. Understanding the details of this breach is the first step in protecting yourself.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Guard against tax fraud

    File your tax return as early as possible and consider requesting an IRS Identity Protection PIN so no one can file a fraudulent return in your name.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Secure your online accounts

    Change the password on any account that reused an exposed password and turn on two-factor authentication wherever it's offered.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Brown Advisory LLC data breach notice and letter questions

Is the Brown Advisory LLC data breach letter legit or a scam?
A notice from Brown Advisory LLC in the mail matches the breach Brown Advisory LLC reported to the Washington Attorney General on March 3, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Brown Advisory LLC through a phone number or website you find yourself.
Where can I see the official Brown Advisory LLC breach notice?
Brown Advisory LLC's report is published by the Washington Attorney General: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA36893.pdf Compare it with the letter you received to confirm the dates and details match.
How many people were affected by the Brown Advisory LLC data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information 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. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Did Brown Advisory LLC offer free credit monitoring?
Any free monitoring Brown Advisory LLC is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Enrolling does not give up your right to bring a claim.
What should I do after getting the Brown Advisory LLC data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Is there a Brown Advisory LLC data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Brown Advisory LLC. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
Do I need a Brown Advisory LLC data breach lawyer or attorney?
Talking to a data breach attorney costs nothing here. A lawyer can read your notice, explain your rights under your state's law and tell you whether a claim makes sense.
How much could a Brown Advisory LLC data breach settlement or claim be worth?
There is no set amount, and no Brown Advisory LLC settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. The filing lists Full Name, Social Security Number, Date of Birth as involved. Keep receipts and records; they're what damages claims are built on.
Can I sue Brown Advisory LLC over the data breach?
It depends on what was exposed, the law in Washington and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.

Source: Washington Attorney General filing

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