Breakthrough Worldwide Data Breach Letter: What Happened and Your Legal Options

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Got a data breach letter from Breakthrough Worldwide?

Dapeer Law, P.A. is investigating a potential class action against Breakthrough Worldwide, the organization named in an October 2026 Massachusetts data breach filing. The investigation is on behalf of individuals whose personal information relating to investment holdings with Breakthrough Services, L.L.C. was compromised in a data security incident at Ernst & Young LLP, which received the information while providing tax services.

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Massachusetts residents affected
27
Reported to the Massachusetts Attorney General; Massachusetts only
Breach window
Not stated in the letter
The letter gives no incident dates
Notification delay
Not stated in the letter
The letter gives no discovery or mailing date
Credit monitoring
24 months
Through Experian IdentityWorks (Experian, Equifax and TransUnion files)
Updates

Latest on the Breakthrough Worldwide data breach

  • : Dapeer Law opened its investigation following notice filings posted by the Massachusetts Attorney General.
Eligibility

Who qualifies for the Breakthrough Worldwide 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 Ernst & Young LLP about your investment holdings with Breakthrough Services, L.L.C.
  • Your letter offered a complimentary 24-month Experian IdentityWorks membership, including credit monitoring of your Experian, Equifax and TransUnion files.
  • Your letter says Ernst & Young LLP received your personal information relating to your investment holdings with Breakthrough Services, L.L.C. while providing tax services.
  • 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 Breakthrough Worldwide data breach

Breakthrough Worldwide is the organization named in a data breach filing reported in Massachusetts on October 20, 2026, which lists 27 Massachusetts residents. The notice letter posted with that filing comes from Ernst & Young LLP ("EY"). EY states that it "provides professional tax services to a wide range of financial institutions globally" and that, in the course of providing these tax services, it "received certain personal information relating to your investment holdings with Breakthrough Services, L.L.C."

According to the letter, EY determined that individual investor personally identifiable information was compromised. The letter says the information that was accessed varies by individual but may include name, address, financial information about your investment (such as capital contribution and return information), Social Security numbers, tax identifiers, LP/investor codes and partial TINs. It states that bank account numbers, income, and net worth were not included in the impacted data. The posted copy shows a placeholder where each person's own data elements would be listed.

The letter says that upon discovery EY took steps to secure its systems, launched an investigation with third-party specialists, and notified federal law enforcement. It does not say when the incident happened, when it was discovered, or how it occurred. EY is offering 24 months of complimentary Experian IdentityWorks, which includes credit monitoring, identity restoration, and identity theft insurance.

Top of the sample Breakthrough Worldwide, L.L.C. 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.
Massachusetts filing Tax services provider incident Possible SSN exposure Investor data Financial Services
Action plan

What to do if you got a Breakthrough Worldwide data breach letter

1

Keep your notice letter

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

2

Enroll in the free 24-month Experian IdentityWorks membership

Use the activation code and enrollment website printed in your letter, and enroll before the enrollment deadline it states. 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

Breakthrough Worldwide breach timeline

Oct 20, 2026 Passed
Data breach filing reported in Massachusetts (27 Massachusetts residents)
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 stronger data security practices for the investor information handled by the companies involved.

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

FAQ

Breakthrough Worldwide data breach FAQ

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

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

Is the Breakthrough Worldwide data breach letter real or a scam? +

Breakthrough Worldwide 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 Breakthrough Worldwide? +

If you received a notice letter from Ernst & Young LLP about personal information relating to your investment holdings with Breakthrough Services, L.L.C., 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? +

The letter posted with the Massachusetts filing says the information that was accessed varies by individual but may include name, address, financial information about your investment (such as capital contribution and return information), Social Security numbers, tax identifiers, LP/investor codes and partial TINs. It says bank account numbers, income, and net worth were not included. The posted copy shows a placeholder where each person's data elements would be listed, so check your own letter for what was involved for you.

Did Breakthrough Worldwide offer free credit monitoring? +

Yes. The letter offers complimentary access to Experian IdentityWorks for 24 months. The letter says this includes credit monitoring of Experian, Equifax and TransUnion files, identity restoration, and identity theft insurance. Enroll with the activation code before the deadline printed in your letter. Enrollment does not waive your right to pursue a claim.

How many people were affected by the Breakthrough Worldwide breach? +

The Massachusetts filing lists 27 Massachusetts residents. A total number of affected individuals has not been disclosed in the sources reviewed. 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 copy of the notice letter is posted with the Massachusetts data breach filing for Breakthrough Worldwide (linked in Sources below). 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 Breakthrough Worldwide, L.L.C., Experian IdentityWorks, 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 Attorney 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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