Strauss Borrelli PLLC, a leading data breach law firm, is investigating Mengel, Metzger, Barr & Co., LLP (“MMB+CO”) regarding its recent data breach. The MMB+CO data breach involved sensitive personal identifiable information and protected health information belonging to over 10,300 individuals.1
ABOUT MENGEL, METZGER, BARR & CO., LLP:
MMB+CO is an accounting and consulting firm based in New York. Founded in 1975, MMB+CO provides audit, tax, business advisory, forensic and investigative accounting, and litigation support services to corporations, business, and individuals throughout New York State.2 Headquartered in Rochester, New York, MMB+CO employs over 200 individuals.3
WHAT HAPPENED?
Recently, MMB+CO reported to the Attorney General of Maine 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, MMB+CO experienced a cyberattack that impacted their systems on February 21, 2025.1 As a result, MMB+CO launched an investigation to determine the nature of the incident.
Following their investigation, MMB+CO 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
- Date of birth
- Driver’s license number
- Financial account information
- Medical information
- Health insurance information
On June 26, 2025, MMB+CO began sending breach notification letters to impacted individuals. Based on the breach notice sent to Maine residents, MMB+CO is providing affected individuals with a list of the specific types of sensitive information impacted and complimentary credit monitoring services. A link to the form breach notification that MMB+CO posted to its website is below.
If you received a breach notification letter from Mengel, Metzger, Barr & Co., LLP:
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.
