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High

monitoring

Updated 28 days ago

Marshall Dennehey Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving Marshall Dennehey.
•Discovered on May 12, 2026.
•Possible data exposed: Name, Other Personal Identifier.
•Affects individuals in: Maine.
•Confirmation level: Confirmed by regulators.

Breach confirmed

The Marshall Dennehey breach is confirmed. If you may be affected, add your details below and we will take it from there.

Detailed summary

Marshall Dennehey, a litigation defense law firm, reported an external system breach (hacking incident) that occurred between July 24, 2025, and July 30, 2025. The company discovered the breach on July 27, 2025. This information was disclosed through a breach notice filed with the Maine Attorney General.

The breach involved the acquisition of names and other personal identifiers. The Maine AG notice indicates that 123,158 individuals were affected, including 120 residents of Maine. The specific subcategories of additional personal information acquired have not been publicly detailed. It has not been explicitly confirmed whether SSN, medical, or financial data were exposed.

Details about this incident can evolve as more information becomes available, and consumer notices may be delayed.

Data possibly involved

Name
Other Personal Identifier

Company Response Timeline

Response Grade

Took over 180 days or has not yet notified consumers

Breach Occurred

Jul 24, 2025

Company Discovered

Jul 27, 2025

Regulator Notified

Apr 28, 2026

Consumers Notified

Apr 28, 2026

3 days to discover

275 days to notify consumers

Breach Verification Status

Reports Only

Complete

Initial dark web reports of potential breach

Company Confirmed

Complete

Company has acknowledged the breach

Regulator Confirmed

Current

Confirmed by regulatory authorities

Note: Breach verification can take time. Information may evolve as more details become available from companies and regulators.

Case Status:

Monitoring

We're monitoring this situation for developments.

Were You Affected By This Breach?

If you are a customer or have received a data breach notification, you may submit your information as part of our ongoing investigation. Submitting your information is free and does not obligate you.

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Check Your Risk Level

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Do you use Marshall Dennehey?

Yes

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What should I do?

Change your passwords

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Enable two-factor authentication

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Monitor your accounts

Watch for suspicious activity on your financial and online accounts

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Be cautious of emails or messages claiming to be from the affected company

Consider a credit freeze

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