Hennessy Advisors Inc. Reports Data Breach to Illinois Officials

On February 5, 2026, Hennessy Advisors Inc. submitted a data breach notification to the Illinois Attorney General's office. The company is currently investigating the incident, as detailed in the public filing.

The official report indicates that personal information was involved in this security incident. However, the specific types of data exposed were not detailed in the public filing. DataBreachSearch.com references only information explicitly stated in official breach reports and cannot specify data types not confirmed by the source.

Individuals who have a relationship with Hennessy Advisors Inc. should remain vigilant for any unusual activity across their personal accounts. It is advisable to carefully review financial statements and other personal records.

General protective measures include monitoring credit reports for any unauthorized activity. Placing a fraud alert or security freeze on your credit files with the major credit bureaus can also help prevent new accounts from being opened in your name without your consent.

This information is derived from the official data breach filing made public with state regulators. These filings provide a public record of reported security incidents.