Windels Marx Lane & Mittendorf LLP Reports Indiana Data Incident

Windels Marx Lane & Mittendorf LLP, a prominent law firm, has filed a report regarding a data security incident involving unauthorized access to its systems. The firm officially reported this event to the Indiana Attorney General on March 30, 2026, noting that the incident itself took place on or around September 11, 2025.

While the specific types of data compromised were not detailed in the public filing, the firm handles sensitive client information in its operations. Windels Marx Lane & Mittendorf LLP has indicated that individuals who received a direct notification letter were identified as having their personal information stored within the affected environment at the time of the incident.

As a law firm providing comprehensive legal services, Windels Marx Lane & Mittendorf LLP typically maintains various forms of personal identification, financial records, and confidential case-related documentation. The filing with the Indiana Attorney General serves to formally acknowledge the security breach and inform affected parties.

Recipients of a data breach notification from Windels Marx Lane & Mittendorf LLP should carefully review the information provided in that letter. It is generally advisable to remain vigilant for any unusual activity in personal accounts and to consider placing a fraud alert or credit freeze with major credit bureaus as a proactive measure.

The firm has stated that the incident remains under investigation. Affected individuals should continue to monitor any official communications from Windels Marx Lane & Mittendorf LLP for further updates regarding the security incident and any additional protective recommendations.