Got a data breach letter from Fourthline?
Dapeer Law, P.A. is investigating a potential class action against Fourthline (listed in state filings as Fourthline Capital Management, LLC), a company with a Washington, DC mailing address, on behalf of individuals whose personal information may have been involved in a May 2026 email account incident.
Latest on the Fourthline data breach
- : Dapeer Law opened its investigation following notice filings posted by the Massachusetts Attorney General.
Who qualifies for the Fourthline 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 Fourthline dated October 2026.
- Your letter offered enrollment in 24 months of free credit monitoring and identity restoration services through Cyberscout, a TransUnion company.
- Your letter says your personal information was contained in the affected Fourthline email account.
- 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 in the Fourthline data breach
According to its notice letter, on May 26, 2026, Fourthline discovered unauthorized access to one account in its email environment, from May 20, 2026 to May 26, 2026. The letter says Fourthline immediately secured the affected account, launched an investigation, and reviewed the affected email account to identify any personal information in it. On August 20, 2026, Fourthline determined that some individuals' information may have been impacted.
Fourthline's letter is dated October 29, 2026, and the incident was reported to the Massachusetts Attorney General the same day. The posted letter says the affected information contained the recipient's name, but the remaining categories are blank in the posted copy. The Massachusetts filing lists name, Social Security numbers and financial account information. The letter says Fourthline is unaware of any attempted or actual misuse, and it offers 24 months of credit monitoring and identity restoration services through Cyberscout, a TransUnion company.
The letter is dated about five months after the discovery. Whether Fourthline's email security practices met legal standards, and whether the time taken to notify individuals caused additional harm, are among the issues being evaluated.
What to do if you got a Fourthline data breach 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 Cyberscout monitoring described in your letter within 90 days of the letter's date, as the letter requires. 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
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Fourthline 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 Fourthline to implement stronger email and data security practices going forward.
Compensation categories depend on applicable state law, the types of data exposed, and documented losses. No recovery is guaranteed.
Fourthline data breach FAQ
I received a data breach letter from Fourthline. What should I do? +
Keep the letter, enroll in the free 24-month Cyberscout credit monitoring within 90 days of the letter's date, review your account statements and credit reports, consider a fraud alert or credit freeze, and contact a data breach attorney for a free consultation. Accepting credit monitoring does not waive your right to sue.
Is the Fourthline data breach letter real or a scam? +
Fourthline has reported this incident to the Massachusetts Attorney General. 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 Fourthline? +
If you received a breach notice from Fourthline about this incident, you are likely eligible for a free case evaluation. Eligibility depends on your state of residence, the categories of your data that were involved, 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? +
Fourthline's letter says the affected information contained the recipient's name, and the remaining categories are blank in the copy posted with the Massachusetts filing. The Massachusetts filing lists name, Social Security numbers and financial account information. Your individual letter should list the categories involved for you.
Did Fourthline offer free credit monitoring? +
Yes. The Massachusetts letter says Fourthline is providing 24 months of credit monitoring and identity restoration services at no charge through Cyberscout, a TransUnion company, including single bureau credit monitoring, credit report and credit score services. You must enroll within 90 days of the date of the letter. Enrollment is separate from, and does not waive, your right to pursue a claim.
How many people were affected by the Fourthline breach? +
Fourthline has not disclosed a total number of affected individuals. The Massachusetts filing reports 2 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? +
A copy of Fourthline's notice letter is posted with the Massachusetts Attorney General (linked in Sources below). If you received a letter but no longer have it, Dapeer Law can assist you during your free consultation.
Sources & references
- Official breach notice filing · Massachusetts Attorney General, Fourthline Capital Management, LLC notice letter
- 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.
