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Hallisey & D’Agost Data Breach Lawsuit Investigation
Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the Hallisey & D’Agostino, LLP data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About Hallisey & D’Agostino, LLP
Hallisey & D’Agostino, LLP is a public accounting firm based in Wethersfield, Connecticut.
With an estimated 14 employees, the firm’s main office is located at 540 Silas Deane Highway, Wethersfield, CT 06109.
What Happened?
On Oct. 21, 2025, Hallisey & D’Agostino, LLP identified unusual activity in its computer network. Immediate action was taken to secure the network and an investigation was launched with the help of external cybersecurity experts. The investigation revealed that an unauthorized actor gained access to the firm’s network between Sept. 28, 2025, and Oct. 22, 2025, and may have acquired certain files, some of which contained personal information.
After a comprehensive review of the affected data, completed on March 19, 2026, the firm determined that personal information may have been involved in the incident. Written notifications were sent to affected individuals on April 17, 2026.
According to the disclosure, the breach affected 16,683 people in the United States, including 74 in Maine.
You May Be Entitled to Compensation
Lawyers are ready to help people affected by the Hallisey & D’Agostino, LLP data breach. If your information was exposed, you may be entitled to compensation. To find out if you qualify and to join a lawsuit, complete the below form.
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