New York Data Breaches — Page 3

Jacobs Doland Beer experienced a ransomware attack and data breach in May 2026, with a threat actor claiming to have stolen corporate data.

A data breach involving Reisz Siderman Eisenberg, APC was confirmed by the California Attorney General, but specific details remain unknown.

Informa Exhibitions U.S. Construction and Real Estate, Inc., along with other Informa U.S. entities and Informa TechTarget, experienced a data breach in 2025.

Castaglia, LLP experienced a data breach in early 2026, confirmed by a regulatory filing in Maine.

Mazzola Mardon, a New York law firm, experienced a data breach in 2025 where an unauthorized actor copied or downloaded certain files.

Farrell Fritz, a New York law firm, investigated a data security event in 2026 that may have involved sensitive personal information.

Pavarini McGovern Construction Models experienced a data breach in April 2026, where sensitive building data for two major New York projects was allegedly exposed and offered for sale.

KCD, Inc. reportedly experienced a data incident in 2026, though specific details regarding the breach are limited.

Marlborough Partners experienced a data breach in 2025 due to a ransomware attack by the coinbasecartel group, resulting in 1 TB of data exfiltration, as reported by ransomware trackers.

Cornick, Garber & Sandler, LLP experienced an external system breach between February and March 2025.

A FulcrumSec breach in 2026 allegedly compromised a shared AWS cloud environment impacting Unique Computing, Gennet.AI, ReFocus AI, Patriotic Insurance, Alliance Insurance Services, and Ohio Mutual Insurance Group. This information is based on reports only.

The Buffalo Neuroimaging Analysis Center experienced a ransomware attack in March 2026, as reported by ransomware tracking sites.

Mutual of America Life Insurance Co. experienced a data breach in 2025 where data was exposed through an external system breach. The company discovered the breach in February 2026 and began notifying consumers in March 2026.

Wade Clark Mulcahy LLP experienced a data breach in late 2025 where names and other personal identifiers were acquired through an external system breach.

Brighton Eye, an eye care center in Brooklyn, NY, experienced a ransomware data breach on March 7, 2026, according to recent reports.

Yurdriversnetwork, likely YUR Drivers Network Inc., experienced a ransomware attack claimed by the Killsec group on March 6, 2026, with the full extent of the breach yet to be confirmed.

Southold Town Senior Services and Southold Police Department experienced a reported data breach in March 2026, claimed by the Rhysida ransomware group.