Hennessy Advisors and Inc.: Hennessy Advisors Data Breach Claims Investigated by Lynch Carpenter

Hennessy Advisors Reports Data Breach Affecting Over 12,000 Individuals

On February 26, 2026, Hennessy Advisors, Inc., a Pittsburgh-based investment firm, disclosed a cybersecurity incident that exposed the personal information of more than 12,000 individuals. The breach involved unauthorized access to the company’s network, potentially compromising sensitive data, including names paired with driver’s licenses and financial account details.

Law firm Lynch Carpenter, LLP, which specializes in data privacy litigation, has launched an investigation into the incident. The firm, with offices in Pennsylvania, California, and Illinois, has previously represented clients in similar cases and is reviewing potential legal claims for affected individuals.

Hennessy Advisors has not provided further details on the breach’s origin or the timeline of the unauthorized access. The incident adds to a growing list of financial sector cybersecurity threats, underscoring the risks to personally identifiable information (PII) in investment and advisory services.

Source: https://www.globenewswire.com/news-release/2026/02/26/3245765/0/en/Hennessy-Advisors-Data-Breach-Claims-Investigated-by-Lynch-Carpenter.html

Hennessy Advisors, Inc. cybersecurity rating report: https://www.rankiteo.com/company/hennessy-advisors-inc.

"id": "HEN1772152350",
"linkid": "hennessy-advisors-inc.",
"type": "Breach",
"date": "2/2026",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'customers_affected': '12000',
                        'industry': 'Financial Services',
                        'location': 'Pittsburgh, Pennsylvania, USA',
                        'name': 'Hennessy Advisors, Inc.',
                        'type': 'Investment Firm'}],
 'data_breach': {'number_of_records_exposed': '12000',
                 'personally_identifiable_information': 'Yes',
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': ['Names',
                                              'Driver’s licenses',
                                              'Financial account details']},
 'date_publicly_disclosed': '2026-02-26',
 'description': 'Hennessy Advisors, Inc. disclosed a cybersecurity incident '
                'involving unauthorized access to the company’s network, '
                'potentially compromising sensitive data, including names '
                'paired with driver’s licenses and financial account details '
                'of over 12,000 individuals.',
 'impact': {'data_compromised': 'Personal information, including names paired '
                                'with driver’s licenses and financial account '
                                'details',
            'identity_theft_risk': 'High',
            'payment_information_risk': 'High'},
 'investigation_status': 'Ongoing (Lynch Carpenter, LLP investigation)',
 'references': [{'source': 'Cyber Incident Description'}],
 'regulatory_compliance': {'legal_actions': 'Investigation launched by Lynch '
                                            'Carpenter, LLP'},
 'title': 'Hennessy Advisors Data Breach Affecting Over 12,000 Individuals',
 'type': 'Data Breach'}