Baker Tilly Data Breach Letter: What Happened and Your Legal Options

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Active investigation Data breach · Other Sample letter dated Nov 9, 2026

Got a data breach letter from Baker Tilly?

Dapeer Law, P.A. is investigating a potential class action against Baker Tilly (listed in state filings as Baker Tilly Advisory Group, LP), a Chicago, Illinois company, on behalf of individuals whose personal information was affected in a September 2026 cybersecurity incident involving information stored on a platform operated by a third-party service provider.

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People affected
195,512
Total reported to the Texas Attorney General
Breach window
Sep 2 to 8, 2026
Breach dates given to the Texas Attorney General
Notification delay
About 2 months
Discovered Sep 6, 2026, letter dated Nov 9, 2026
Credit monitoring
24 months
Experian IdentityWorks, offered in the posted letters
Updates

Latest on the Baker Tilly data breach

  • : Dapeer Law opened its investigation following notice filings posted by the California, Massachusetts and Texas Attorneys General and the South Carolina Department of Consumer Affairs.
Eligibility

Who qualifies for the Baker Tilly data breach investigation

You may be eligible to participate in a class action if any of the following applies:

  • You received a data breach notification letter from Baker Tilly dated November 2026.
  • Your letter offered a complimentary 24-month Experian IdentityWorks membership with credit and identity monitoring.
  • You, or your child, were told that personal information connected to services Baker Tilly provides to clients was affected.
  • No proof of harm required to consult with counsel. You do not need to have already suffered identity theft to explore your legal options.
  • Excluded: individuals who did not receive a breach notice and whose information was not involved in the incident.

Not sure if you qualify?

Send us your notice, we'll confirm your eligibility at no cost.

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Background

What happened in the Baker Tilly data breach

According to its notice letter, on September 6, 2026, Baker Tilly became aware of a potential cybersecurity incident involving certain information stored on a platform operated by a third-party service provider that Baker Tilly used in connection with services it provides to clients. The letter states that the unauthorized actor was able to obtain data relating to certain Baker Tilly clients. Baker Tilly's report to the Texas Attorney General gives a breach window of September 2 to September 8, 2026.

Baker Tilly says it completed its review of the affected data on October 28, 2026. The sample letters filed in California, Massachusetts and South Carolina are dated November 9, 2026, and the Texas filing says consumers were notified by U.S. Mail. The posted letters show a placeholder where the types of affected information would appear, so they do not show the categories. The Texas filing lists name of individual, address, Social Security Number Information and "Other", and the Massachusetts filing lists Social Security numbers. The letters offer two years of credit and identity monitoring through Experian IdentityWorks.

Baker Tilly reported 195,512 affected individuals to the Texas Attorney General, including 10,456 Texans. The Massachusetts filing lists 2,689 Massachusetts residents, the South Carolina filing lists 1,359 South Carolina residents, and the letter states that 111 Rhode Island residents were notified. A separate version of the letter was addressed to parents or guardians of minors whose information was affected.

Top of the sample Baker Tilly data breach notice letter filed with the California Attorney General
Sample notice letter filed with the California Attorney General. Your letter may look slightly different.
Third-party platform Social Security numbers Texas AG filing California AG filing Experian monitoring
Action plan

What to do if you got a Baker Tilly data breach letter

1

Keep your notice letter

Do not discard it. Your letter contains the activation code and engagement number for the Experian IdentityWorks offer and is important evidence if you decide to participate in a lawsuit.

2

Enroll in the free 24-month Experian IdentityWorks membership

Enroll in the Experian IdentityWorks credit and identity monitoring offered in your letter before the enrollment date printed there. The posted sample letters leave that date blank, so check your own copy. Accepting this benefit does not waive your right to pursue legal action.

3

Place a fraud alert or credit freeze

Contact Equifax, Experian, and TransUnion to place a fraud alert or freeze on your file. Request a free weekly credit report from AnnualCreditReport.com, and use the FTC's IdentityTheft.gov recovery guide.

4

Speak with a data breach attorney

Consultations with Dapeer Law are free and confidential. We'll review your notice, explain your options, and advise whether you may be eligible to join a class action.

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Timeline

Baker Tilly breach timeline

Sep 2 to 8, 2026 Passed
Breach window reported to the Texas Attorney General
Sep 6, 2026 Passed
Baker Tilly became aware of a potential cybersecurity incident
Oct 28, 2026 Passed
Review of affected data completed
Nov 9, 2026 Passed
Notice letters dated; notices reported in California and South Carolina
Nov 10, 2026 Passed
Report posted by the Texas Attorney General
Nov 10, 2026 Passed
Notice reported in Massachusetts
Pending Active
Potential class action filing
Statutes of limitations vary by state and legal theory, typically one to six years. Waiting can permanently bar your claim.
Possible recovery

Compensation you may be entitled to

Out-of-pocket expenses

Credit freezes, identity restoration services, and other costs incurred responding to the breach.

Time spent monitoring

Hours spent reviewing accounts, disputing fraudulent charges, and dealing with identity theft issues.

Identity theft & fraud losses

Unreimbursed funds stolen from accounts, unauthorized credit lines, or tax refund fraud tied to the breach.

Statutory damages

Certain state data breach and consumer protection statutes provide for fixed damages regardless of actual loss.

Injunctive relief

Court orders requiring Baker Tilly to implement stronger data security practices, including for client information stored on third-party service provider platforms.

Compensation categories depend on applicable state law, the types of data exposed, and documented losses. No recovery is guaranteed.

FAQ

Baker Tilly data breach FAQ

I received a data breach letter from Baker Tilly. What should I do? +

Keep the letter, enroll in the free 24-month Experian IdentityWorks membership using the activation code in your letter before the enrollment date printed there, review your account statements and free credit reports, consider a fraud alert or credit freeze, and contact a data breach attorney for a free consultation. Accepting the monitoring does not waive your right to pursue a claim.

Is the Baker Tilly data breach letter real or a scam? +

Baker Tilly has reported this incident to the California, Massachusetts and Texas Attorneys General and the South Carolina Department of Consumer Affairs. Compare your letter to the official filing linked in Sources below, and use only the enrollment website and phone number printed in your letter. Be cautious of unexpected calls, texts or emails about the breach that ask for your Social Security number or account login. If you are unsure, send your letter to Dapeer Law for a free review.

Am I eligible to join a class action against Baker Tilly? +

If you received a November 2026 breach notice from Baker Tilly, for yourself or for your child, you are likely eligible for a free case evaluation. Eligibility depends on your state of residence, the categories of your data that were affected, and any losses you have suffered. Dapeer Law will review your notice at no cost.

How much money could I receive from a class action lawsuit? +

Data breach class action recoveries vary significantly. Settlements typically range from a few hundred dollars for basic out-of-pocket losses to several thousand dollars for documented identity theft, with class size, damages, and negotiation all affecting the final amount. No payout is guaranteed, and this investigation has not yet resulted in a settlement.

What personal information was exposed in the breach? +

The sample letters filed with state regulators show a placeholder where the types of affected information would be listed, so they do not show the categories. The Texas filing lists name of individual, address, Social Security Number Information and "Other". The Massachusetts filing lists Social Security numbers. Your own letter should list the types of your personal information that were affected.

Did Baker Tilly offer free credit monitoring? +

Yes. The letters filed in California, Massachusetts and South Carolina offer two years of credit and identity monitoring through Experian, described as a complimentary 24-month Experian IdentityWorks membership, along with Experian identity restoration assistance. A separate version for parents and guardians offers the same 24-month service for minors. Enroll before the date printed in your letter. Enrollment does not waive your right to pursue a claim.

How many people were affected by the Baker Tilly breach? +

Baker Tilly reported 195,512 affected individuals to the Texas Attorney General, including 10,456 Texans. The Massachusetts filing lists 2,689 Massachusetts residents, the South Carolina filing lists 1,359 South Carolina residents, and the letter states that 111 Rhode Island residents were notified. This page will be updated as more information becomes available.

Is there a deadline to take legal action? +

Yes. Statutes of limitations for data breach claims vary by state and legal theory, typically ranging from one to six years. Waiting can permanently bar your claim. Contact us as soon as possible for a free evaluation.

How do I get a copy of the official breach notice? +

A sample of Baker Tilly's notice letter is posted on the California Attorney General website (linked in Sources below), and copies were also filed in Massachusetts and South Carolina. If you received a letter but no longer have it, Dapeer Law can assist you during your free consultation.

References

Sources & references

Attorney advertising. This page is provided for informational purposes only. It does not constitute legal advice or form an attorney-client relationship. Dapeer Law, P.A. is not affiliated with Baker Tilly Advisory Group, LP (Baker Tilly), Experian, or any credit bureau. Prior results do not guarantee a similar outcome. Information regarding the data incident is drawn from official filings with the California, Massachusetts and Texas Attorneys General and the South Carolina Department of Consumer Affairs.
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Rachel Dapeer, Esq.

Rachel Dapeer is the founding partner of Dapeer Law, P.A., a consumer class action firm with offices in Florida, California, New York, New Jersey, and Illinois. With about 15 years of class action experience, she represents consumers in data breach, privacy, and consumer protection cases. She is admitted to practice in Florida, New York, New Jersey, and Illinois. Hear her hot takes on tiktok: @thatattorneyrachel

https://www.dapeer.com/rachel-dapeer
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