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MMMCA Data Breach Impacts 25K, Exposes SSNs; Lawyers Investigating

Classaction • May 26, 2026

Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the MMMCA data breach.

As part of their investigation, they need to hear from individuals who had their information exposed in the incident , including those who received notice of the MMMCA data breach or otherwise believe they are affected.

The Metropolitan Marine Maintenance Contractors' Association (MMMCA), which represents marine maintenance contractors working in New York and New Jersey harbors, has disclosed a breach impacting 25,528 people .

A sample notification letter (pictured below) states that on April 7, 2026, MMMCA and the Metro-ILA Pension, Fringe Benefit, and Individual Account Retirement Funds detected unauthorized network activity. An investigation revealed that a threat actor accessed the Funds' and MMMCA's environment via one of its virtual private networks.

The information that may have been compromised in the Metropolitan Marine Maintenance Contractors’ Association includes Social Security numbers, dates of birth, phone numbers, and addresses.

Those potentially affected by the MMMCA data breach were notified beginning on May 22, 2026.

If your information was exposed in the MMMCA data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, time spent dealing with the breach, out-of-pocket costs, and more.

A successful case could also force MMMCA to ensure they take proper steps to protect the information they were entrusted with.

Affected by the MMMCA data breach? Fill out the form on this page today.

If you believe your information was exposed in the MMMCA data breach, fill out the form on this page to get in touch with us.

An attorney or legal representative may then reach out to you to explain more this investigation and ask you a few questions.

Remember, there is no cost to get in touch, and you are under no obligation to take action after speaking to someone.

Published: May 26, 2026

The information submitted on this page will be forwarded to Bryson Harris Suciu & DeMay PLLC who has this investigation.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Interstate Management Company and MMMCA Data Breaches Expose Thousands of SSNs Two significant data breaches have occurred in May 2026, affecting thousands of individuals. The Interstate Management Company reported a breach impacting 22,743 people, with personal data accessed between November 19 and November 22, 2025. The compromised data includes names, Social Security numbers, and financial details. Meanwhile, the Metropolitan Marine Maintenance Contractors' Association (MMMCA) disclosed a breach affecting 25,528 individuals, with unauthorized access detected on April 7, 2026. The MMMCA breach also exposed Social Security numbers, dates of birth, phone numbers, and addresses. Both organizations are currently investigating the incidents and potential class action lawsuits are being considered. Individuals affected by these breaches are encouraged to come forward to seek compensation for their losses. 2 sources 65

Extracted Entities

MMMCA Data Breach Impacts 25K, Exposes SSNs; Lawyers Investigating

The full story

Extracted Entities

Attack Types (1)

Companies (2)

Domains (1)

MITRE ATT&CK (1)