Confirmed

Hennessy Advisors: Hennessy Funds investor data accessed and released without authorisation

On March 30, 2025, Hennessy Advisors discovered suspicious activity affecting access to certain systems and data. In late December 2025 it learned that data including personal information of certain Hennessy Funds investors had been accessed and released without authorisation, and on February 5, 2026, after reviewing the released information, it confirmed unauthorised access to notified individuals’ information.

Last updated: 2026-11-09

Overview

Also filed with the California AG on February 24, 2026. Fields are templated; no total is given. The first-disclosure date is the earliest public document confirmed (Vermont AG posting); no 2025 public disclosure was found in other state AG lists, HHS or company notices checked.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

What you can do

Verify notices through official channels, avoid links in unexpected messages, do not provide credentials, and review credit reports and statements.

Sources

  1. Sample consumer notice filed with California AG (Hennessy Advisors, Inc.)California Department of Justice, Office of the Attorney General · 2026-11-09
  2. California AG data breach report: Hennessy Advisors, Inc.California Department of Justice, Office of the Attorney General · 2026-11-09
  3. Vermont AG: Hennessy Advisors notice to consumers (2026-02-23)Vermont Office of the Attorney General · 2026-11-09

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