O'Leary-Guth Law Office Data Breach Lawsuit Investigation
Received a June 2026 breach notice from O'Leary-Guth Law Office?
Dapeer Law, P.A. is investigating a potential class action against O'Leary-Guth Law Office, S.C., a Wisconsin estate planning law firm, on behalf of individuals whose personal information may have been exposed in a data security incident disclosed in June 2026.
Who may qualify
You may be eligible to participate in a class action if any of the following applies:
- You received a data breach notification letter from O'Leary-Guth Law Office dated June 2026.
- Your letter offered enrollment in free Experian IdentityWorks credit monitoring (Experian) with an activation deadline of September 30, 2026.
- You had personal or financial information held by the firm in its capacity as an estate planning law practice.
- 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.
What happened
O'Leary-Guth Law Office, S.C. ("O'Leary-Guth"), a Wisconsin estate planning law firm, notified regulators of a data security incident involving unauthorized activity in its computer systems. According to the notice, the firm secured its environment and launched an investigation to determine the nature and scope of the event. After identifying the information that may have been affected, the firm reviewed its records to locate and notify the individuals involved.
O'Leary-Guth began mailing notification letters on or around June 22, 2026 and filed notice with the Massachusetts Attorney General. In a filing with the Massachusetts Attorney General, the firm reported that the categories of information potentially involved include Social Security numbers and financial account information. The firm is offering affected individuals 24 months of complimentary credit monitoring and identity protection through Experian IdentityWorks, along with identity restoration assistance and $1 million in identity theft insurance. The public notice does not state when the unauthorized activity occurred or when it was discovered.
For a law firm entrusted with Social Security numbers and financial account details, the exposure of this information can carry a lasting risk of identity theft and financial fraud. Whether the firm's data security practices met legal standards, and whether any notification delay caused additional harm, are among the issues being evaluated.
What to do if you received a letter
Keep your notice letter
Do not discard it. Your letter contains the enrollment code for credit monitoring and is important evidence if you decide to participate in a lawsuit.
Enroll in the free 24-month credit monitoring
Enroll in the Experian IdentityWorks (Experian) monitoring offered in your letter before the September 30, 2026 activation deadline. Accepting this benefit does not waive your right to pursue legal action.
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.
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.
Submit your notice for a free review
Two minutes online. A licensed attorney reviews every submission.
Breach timeline
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 the firm to implement stronger data security practices going forward.
Compensation categories depend on applicable state law, the types of data exposed, and documented losses. No recovery is guaranteed.
Common questions
I received a data breach letter from O'Leary-Guth Law Office. What should I do? +
Keep the letter, enroll in the free 24-month Experian IdentityWorks credit monitoring before the September 30, 2026 activation deadline printed in your notice, place a fraud alert or security freeze on your credit file, and contact a data breach attorney for a free consultation. Accepting credit monitoring does not waive your right to sue.
Am I eligible to join a class action against O'Leary-Guth Law Office? +
If you received a June 2026 breach notice from O'Leary-Guth Law Office, you are likely eligible for a free case evaluation. Eligibility depends on your state of residence, the categories of your data that were exposed, 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? +
In its filing with the Massachusetts Attorney General, O'Leary-Guth reported that the incident involved Social Security numbers and financial account information. Your individual notice letter should specify the categories of your data that were involved. Because O'Leary-Guth is an estate planning law firm, other sensitive personal and financial records may also have been held in its systems.
Did O'Leary-Guth Law Office offer free credit monitoring? +
Yes. The firm is providing 24 months of complimentary credit monitoring and identity protection through Experian IdentityWorks, including identity restoration assistance and $1 million in identity theft insurance. Enroll before the September 30, 2026 activation deadline printed in your letter. Enrollment is separate from, and does not waive, your right to pursue a claim.
How many people were affected by the O'Leary-Guth Law Office breach? +
The firm reported to the Massachusetts Attorney General that 7 individuals were affected, all of them Massachusetts residents. This page will be updated as additional 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? +
The notice filed with the Massachusetts Attorney General is available through the Massachusetts AG's office (linked in Sources below). If you received a letter but no longer have it, Dapeer Law can assist you in obtaining a copy during your free consultation.
Sources & references
- Official breach notice filing · Massachusetts Attorney General, Data Breach Notification
- Company · O'Leary-Guth Law Office, S.C. (olglawoffice.com)
- Credit bureau freezes · Equifax · Experian · TransUnion
- Free weekly credit reports · AnnualCreditReport.com
- Identity theft recovery guide · FTC IdentityTheft.gov
Don't let the deadline decide for you. Submit your claim today.
You only have a limited window to act. Our team will review your notice, explain your options, and tell you whether you may be eligible to recover compensation, at no cost to you.
