Normandin, Cheney & O'Neil, PLLC Data Breach Lawsuit Investigation

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Data Breaches / Normandin, Cheney & O'Neil
Active investigation Data breach · Legal Notices mailed Aug 12, 2026

Received an August 2026 breach notice from Normandin, Cheney & O'Neil?

Dapeer Law, P.A. is investigating a potential class action against Normandin, Cheney & O'Neil, PLLC, a New Hampshire-based law firm, on behalf of individuals whose Social Security numbers and financial account information may have been exposed in a cybersecurity incident disclosed in August 2026.

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Breach window
Not disclosed
Unauthorized activity on the firm's network
Notification delay
Not disclosed
Notice letters mailed August 12, 2026
Credit monitoring
24 months
Through Cyberscout (TransUnion)
Eligibility

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 Normandin, Cheney & O'Neil dated August 2026.
  • Your letter offered enrollment in free Cyberscout credit monitoring and identity protection (a TransUnion company).
  • You had personal or financial information held by the firm in its capacity as legal counsel, including in personal injury, real estate, family law, or estate planning matters.
  • 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

On August 12, 2026, Normandin, Cheney & O'Neil, PLLC disclosed a cybersecurity incident to the Massachusetts Attorney General and mailed notice letters to affected individuals. The firm reported that it detected unauthorized activity within its computer network and launched an investigation. The firm has not publicly detailed how the intruder gained access, but its internal review could not rule out access to confidential client information, which prompted notification under the Massachusetts data breach statute.

The regulator filing lists 420 affected Massachusetts residents and identifies the information involved as name, Social Security number, driver's license number, credit or debit card number, and other financial account information. The firm states that it notified law enforcement, changed network passwords, and reviewed and updated its internal security policies and procedures. Affected individuals are being offered 24 months of complimentary credit monitoring and identity protection through Cyberscout, a TransUnion company, with enrollment required within 90 days of the letter date. Because the notice does not state when the unauthorized activity began, when it was discovered, or how long it continued, several facts remain unknown and are being evaluated.

The combination of a Social Security number, a driver's license number, and payment card or financial account information is one of the more sensitive data sets a breach can involve, because a Social Security number cannot easily be changed and can support identity theft years after the incident. Law firms also hold unusually sensitive material about their clients, including medical records in personal injury matters and asset information in estate and real estate matters. Dapeer Law is reviewing whether Normandin, Cheney & O'Neil had reasonable safeguards in place and whether affected individuals may have claims under applicable data protection laws.

Social Security Numbers Financial Account Information Law Firm Data Breach Massachusetts Attorney General Identity Theft Risk Credit Monitoring
Action plan

What to do if you received a letter

1

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.

2

Enroll in the free 24-month credit monitoring

Enroll in the Cyberscout (TransUnion) credit monitoring and identity protection offered in your letter within 90 days of the letter date, using your unique enrollment code at bfs.cyberscout.com/activate. 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. Because credit or debit card numbers and other financial account information were reported as involved, review your bank, card, and investment statements for unfamiliar charges and consider asking your bank to issue a replacement card.

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

Breach timeline

Date not disclosed Passed
Unauthorized activity detected within the firm's computer network
Date not disclosed Passed
Investigation completed, access to confidential client information could not be ruled out
August 12, 2026 Passed
Notice filed with the Massachusetts Attorney General, letters mailed to 420 residents
Within 90 days of the letter Active
Deadline to enroll in free Cyberscout credit monitoring
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, unauthorized card charges, 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 Normandin, Cheney & O'Neil 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.

FAQ

Common questions

I received a data breach letter from Normandin, Cheney & O'Neil. What should I do? +

Keep your notice letter, since it contains your enrollment code and serves as evidence. Enroll in the free 24-month Cyberscout (TransUnion) credit monitoring and identity protection within 90 days of the letter date at bfs.cyberscout.com/activate, review your bank, credit card, and investment statements for transactions you do not recognize, and check your credit reports for new accounts or inquiries you did not initiate. Because Social Security numbers were reported as involved, consider placing a one-year fraud alert or a no-cost credit freeze with Equifax, Experian, and TransUnion, and continue watching for identity theft over the long term. You can also contact a data breach attorney to review your options at no cost.

Am I eligible to join a class action against Normandin, Cheney & O'Neil? +

Individuals who received the August 2026 Normandin, Cheney & O'Neil notice letter, or who experienced identity theft or fraud they believe is linked to this incident, may qualify. Eligibility can depend on your state of residence, the categories of information exposed in your particular letter, and any documented out-of-pocket losses or time spent responding to the breach. A free consultation with Dapeer Law can confirm whether you may be eligible.

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 Massachusetts Attorney General filing identifies the information involved as name, Social Security number, driver's license number, credit or debit card number, and other financial account information. Not every affected person's letter will list every category, so check your individual notice for the specifics that apply to you and keep it for your records.

Did Normandin, Cheney & O'Neil offer free credit monitoring? +

Yes. The firm is offering 24 months of complimentary credit monitoring and identity protection through Cyberscout, a TransUnion company. You must enroll yourself within 90 days of the letter date, using the unique enrollment code in your letter at bfs.cyberscout.com/activate. Enrolling does not waive your right to pursue legal claims.

How many people were affected by the Normandin, Cheney & O'Neil breach? +

The Massachusetts Attorney General filing lists 420 affected Massachusetts residents. The total number of individuals affected in New Hampshire and other states, if any, is not stated in the public notice. 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? +

The notice was filed with the Massachusetts Attorney General, whose office publishes data breach filings online, and a copy is available through the download link in the Sources section of this page. Dapeer Law can also help you obtain a copy of the notice during a 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 Normandin, Cheney & O'Neil, PLLC, Cyberscout, or any credit bureau. Prior results do not guarantee a similar outcome. All information regarding the data incident is drawn from the official notification filed with Massachusetts Attorney General on August 12, 2026.
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