Aesto Data Breach Letter: What Happened and Your Legal Options

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Active investigation Data breach · Healthcare Notice dated Oct 15, 2026

Got a data breach letter from Aesto?

Dapeer Law, P.A. is investigating a potential class action against Aesto, a provider of healthcare data migration and archiving services, on behalf of individuals whose protected health information pertaining to Settlement Health and Medical may have been accessed and/or acquired in a December 2025 network security incident.

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Massachusetts residents affected
17
Reported to the Massachusetts Attorney General; Massachusetts only
Breach window
Between Dec 2 and Dec 18, 2025
Unauthorized access, on or about these dates
Notification delay
Substitute notice Jun 26, 2026
Incident Dec 2025; letters mailed from Oct 9, 2026
Identity protection
12 or 24 months
IDX membership, enroll by Jan 15, 2027
Updates

Latest on the Aesto data breach

  • : Dapeer Law opened its investigation following notice filings posted by the Massachusetts and New Hampshire Attorneys General.
Eligibility

Who qualifies for the Aesto 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 Aesto dated October 2026, or a letter from Settlement Health and Medical about the Aesto incident.
  • Your letter offered a complimentary IDX identity protection membership, with an enrollment deadline of January 15, 2027.
  • Your letter says your protected health information pertaining to Settlement Health and Medical was stored on Aesto's network, which Aesto used to provide healthcare data migration and archiving services for Settlement Health and Medical.
  • 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.

Check eligibility →
Background

What happened in the Aesto data breach

Aesto, LLC writes that it provides healthcare data migration and archiving services for Settlement Health and Medical. According to its letter, on or about December 18, 2025, Aesto experienced a network security incident that impacted a limited portion of its Amazon Web Services (AWS) infrastructure. Aesto says it investigated with external cybersecurity professionals.

After a forensic investigation and manual document review, Aesto confirmed on May 26, 2026 that between on or about December 2, 2025, and December 18, 2025, a limited amount of protected health information pertaining to Settlement Health and Medical, stored on Aesto's network, may have been accessed and/or acquired by an unauthorized actor. A letter from Aesto's counsel in the Massachusetts filing says Aesto notified the covered entities with impacted information on June 26, 2026. The individual notice letter posted with the filing is dated October 15, 2026, about ten months after the incident. Aesto states it has no evidence that any of the information has been misused.

The posted letter names your full name as involved, but the rest of its list is shown only as a placeholder. The state filings list full names, dates of birth, medical information, health insurance information, individual taxpayer identification numbers, other government ID numbers, and Social Security numbers. Settlement Health and Medical is offering a complimentary IDX identity protection membership. Whether Aesto's security practices met legal standards, and whether the delay before individual notice caused additional harm, are among the issues being evaluated.

Top of the sample Aesto LLC data breach notice letter filed with the Massachusetts Attorney General
Sample notice letter filed with the Massachusetts Attorney General. Your letter may look slightly different.
Vendor breach Protected health information Possible SSN exposure Delayed notice Massachusetts filing
Affected institutions

Got an Aesto letter through Settlement Health and Medical?

Aesto provides healthcare data migration and archiving services, so many notices name the recipient's Settlement Health and Medical. Organizations that have disclosed customer or member information in this incident include:

  • Settlement Health and Medical

Aesto writes that it "has no evidence that any of the information has been misused" and that it continues to "take significant measures to protect your information."

Don't see yours? Your letter still qualifies for a free review.

Action plan

What to do if you got an Aesto data breach letter

1

Keep your notice letter

Do not discard it. Your letter contains the enrollment code for IDX identity protection and is important evidence if you decide to participate in a lawsuit.

2

Enroll in the free IDX identity protection

Enroll in the IDX membership offered in your letter before the January 15, 2027 deadline, using the enrollment code printed on the letter. 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. The letter also suggests reviewing your financial account statements and credit reports regularly for irregular activity.

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.

Submit your notice for a free review

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Timeline

Aesto breach timeline

Between Dec 2 and Dec 18, 2025 Passed
Unauthorized access to Aesto network, on or about these dates
Dec 18, 2025 Passed
Network security incident in part of Aesto's AWS infrastructure
May 26, 2026 Passed
Aesto confirmed information may have been accessed and/or acquired
Jun 26, 2026 Passed
Aesto notified covered entities with impacted information
Oct 15, 2026 Passed
Individual notice letters dated
Oct 17, 2026 Passed
Massachusetts filing listed for Settlement Health and Medical
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 Aesto to implement stronger data security practices for the healthcare data it stores going forward.

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

FAQ

Aesto data breach FAQ

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

Keep the letter. Enroll in the free IDX identity protection before the January 15, 2027 deadline, using the enrollment code printed on your letter. Consider placing a fraud alert or credit freeze, review your financial account statements and credit reports, and contact a data breach attorney for a free consultation. Accepting identity protection does not waive your right to sue.

Is the Aesto data breach letter real or a scam? +

Settlement Health and Medical has reported this incident to the Massachusetts and New Hampshire Attorneys 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.

Why did I get an Aesto letter if I never used Aesto? +

Aesto's letter says Aesto, LLC "provides healthcare data migration and archiving services for Settlement Health and Medical." According to the letter, a limited amount of protected health information pertaining to Settlement Health and Medical was stored on Aesto's network and may have been accessed and/or acquired by an unauthorized actor between on or about December 2, 2025, and December 18, 2025. The letter is signed by Aesto on behalf of Settlement Health and Medical.

Am I eligible to join a class action against Aesto? +

If you received a letter from Aesto, sent on behalf of Settlement Health and Medical, about this incident, you may be eligible for a free case evaluation. Eligibility depends on your state of residence, the categories of your information that may have been 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? +

The posted sample letter says the information potentially impacted includes your full name, but the rest of its list appears only as a placeholder, so your own letter should show which items apply to you. The state filings list full names, dates of birth, medical information, health insurance information, individual taxpayer identification numbers, other government ID numbers, and Social Security numbers. The New Hampshire filing says the affected information varied by person, and that this information may have been accessed and/or acquired.

Did Aesto offer free credit monitoring? +

Yes. Settlement Health and Medical is offering a complimentary IDX identity protection membership. The posted sample letter shows the term as either 12 or 24 months, so check your own letter for your term. IDX services include credit and CyberScan monitoring, a $1,000,000 insurance reimbursement policy, and fully managed ID theft recovery services. The enrollment deadline is January 15, 2027. Enrollment does not waive your right to pursue a claim.

How many people were affected by the Aesto breach? +

A total number of affected individuals has not been publicly disclosed. The Massachusetts filing lists 17 Massachusetts residents, and the letter states that 3 individuals in Rhode Island are involved. These are state counts only, not a total. 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 and sample letter filed in Massachusetts are posted on mass.gov (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.

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 Aesto LLC, IDX, or any credit bureau. Prior results do not guarantee a similar outcome. Information regarding the data incident is drawn from official filings with the Massachusetts and New Hampshire Attorneys General.
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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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