Hennessy Advisors Reports Data Security Incident to Illinois AG

Hennessy Advisors, Inc., an investment management company, officially reported a data security incident to the Illinois Attorney General's office on February 5, 2026. This report confirms a security event impacting systems at the firm, as detailed in public filings.

The filing from Hennessy Advisors indicates that unauthorized access to certain systems occurred. This incident potentially involved the exposure of personal information belonging to individuals whose data was contained within the affected files. The exact scope and nature of the unauthorized access are part of an ongoing investigation.

While the official filing confirms a security breach, the specific types of personal information involved are not detailed in the public record. Therefore, individuals should refer to any direct notification they received from Hennessy Advisors for precise information regarding what data was impacted.

If you received a data breach notification letter from Hennessy Advisors, Inc., it is important to review it carefully. The letter will provide details specific to your situation. As general protective measures, individuals are advised to remain vigilant by monitoring their financial accounts and credit reports for any unusual activity. Consider placing a fraud alert or security freeze on your credit if you have concerns.

Hennessy Advisors has indicated that the investigation into this security incident is ongoing. Official notification letters are the primary source for affected individuals to understand the direct impact of this event and to take appropriate steps to protect their information.