Stephen Mathias & Co Files Data Breach Notice in Illinois

Stephen Mathias & Co, a firm operating in Illinois, officially reported a data security incident to the state's Attorney General on June 4, 2026. This filing indicates that unauthorized access to systems containing personal information occurred, though specific details about the nature of the breach remain under investigation. The firm has stated it is actively looking into the scope and impact of the event.

The official report from Stephen Mathias & Co does not specify the exact type of security incident that took place or the precise categories of personal information that may have been exposed. Similarly, the number of individuals potentially affected by this incident has not been publicly disclosed in the filing. The date when the breach initially occurred is also currently unknown.

As a professional legal services firm, Stephen Mathias & Co handles a broad range of sensitive data in its operations. While the specific data involved in this incident is not detailed, any compromise of personal information can carry risks for those affected. Individuals who receive direct notification from Stephen Mathias & Co should review the provided information carefully.

In response to any data security incident, general precautions are recommended. Individuals should remain vigilant for any unusual activity across their online accounts and financial statements. It is advisable to be cautious of unsolicited communications, especially those requesting personal details, as these could be phishing attempts. Regularly reviewing account statements and credit reports can help detect any potential misuse of personal information.

This official filing with the Illinois Attorney General serves as a public record of the reported security event. Stephen Mathias & Co continues its investigation, and additional information may become available as their assessment progresses and as required by regulatory obligations.