Strauss Borrelli PLLC, a leading data breach law firm, is investigating McElroy, Deutsch, Mulvaney & Carpenter LLP (“McElroy Deutsch”) regarding its recent data breach. The McElroy Deutsch data breach involved sensitive personal information and protected health information belonging to an undetermined number of individuals.
ABOUT MCELROY, DEUTSCH, MULVANEY & CARPENTER LLP:
McElroy Deutsch is law firm based in New Jersey. Founded in 1983, McElroy Deutsch offers legal services to clients across a range of practice areas, including health care, litigation, labor, insurance, environmental, corporate transactions, real estate, and more.2,3 Headquartered in Morristown, New Jersey, McElroy Deutsch employs over 200 individuals and has 12 additional offices across Massachusetts, Colorado, Connecticut, New Jersey, New York, Pennsylvania, Florida, Rhode Island, and Delaware.2,3
WHAT HAPPENED?
Recently, McElroy Deutsch announced that it had experienced a data breach in which sensitive personal identifiable information and protected health information in its care may have been compromised. According to the breach notice shared on its website, on April 3, 2025, McElroy Deutsch became aware that it was the target of a cyberattack.1 As a result, McElroy Deutsch launched an investigation to determine the nature of the incident.
Through its investigation, McElroy Deutsch confirmed that sensitive personal information in its systems may have been accessed and acquired by an unauthorized third party between March 28 and April 1, 2025. As a result, McElroy Deutsch began a review of the data to determine what information had been impacted as well as identify the specific individuals affected. While the information impacted varies depending on the individual, the type of information potentially exposed includes:
- Name
- Social Security number
- Driver’s license number
- Financial account information
- Payment card information
- Health insurance information
- Medical information
As a result of the breach, McElroy Deutsch posted notice of the breach on its website. Additionally, on December 19, 2025, McElroy Deutsch began mailing data breach notification letters to impacted individuals. Based on the website breach notice, McElroy Deutsch is providing affected individuals with a list of the specific types of sensitive information impacted. A link to the website breach notice is below.
If you believe you have been affected by the McElroy, Deutsch, Mulvaney & Carpenter LLP breach:
We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at 872.263.1100 or sam@straussborrelli.com.
