Wisner Baum LLP: DATA BREACH ALERT: Edelson Lechtzin LLP is Investigating Claims on Behalf of Wisner Baum LLP Clients Whose Data May Have Been Compromised

Wisner Baum LLP Investigates Data Breach Impacting Sensitive Personal Information

On January 26, 2026, Edelson Lechtzin LLP announced an investigation into a data breach at Wisner Baum LLP, a Los Angeles-based law firm specializing in litigation against major corporations. The breach was first detected on October 9, 2025, when Wisner Baum identified suspicious activity on its IT network.

An internal investigation revealed that an unauthorized third party accessed the firm’s systems between October 8 and October 9, 2025, potentially exfiltrating files containing sensitive personal data. Affected information may include names, driver’s license numbers, bank account and routing details, and medical records.

Edelson Lechtzin LLP is exploring legal action on behalf of individuals whose data may have been compromised. The firm, known for handling class action lawsuits involving data breaches, securities fraud, and consumer protection cases, is currently gathering information from impacted parties.

No further details on the scope of the breach or the number of affected individuals have been disclosed at this time. The incident remains under investigation.

Source: https://www.globenewswire.com/news-release/2026/01/26/3225889/0/en/DATA-BREACH-ALERT-Edelson-Lechtzin-LLP-is-Investigating-Claims-on-Behalf-of-Wisner-Baum-LLP-Clients-Whose-Data-May-Have-Been-Compromised.html

Wisner Baum cybersecurity rating report: https://www.rankiteo.com/company/wisnerbaum

"id": "WIS1769454564",
"linkid": "wisnerbaum",
"type": "Breach",
"date": "10/2025",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'industry': 'Legal Services',
                        'location': 'Los Angeles, USA',
                        'name': 'Wisner Baum LLP',
                        'type': 'Law Firm'}],
 'data_breach': {'data_exfiltration': 'Potential',
                 'personally_identifiable_information': 'Yes',
                 'sensitivity_of_data': 'High',
                 'type_of_data_compromised': ['Names',
                                              'Driver’s license numbers',
                                              'Bank account and routing '
                                              'details',
                                              'Medical records']},
 'date_detected': '2025-10-09',
 'date_publicly_disclosed': '2026-01-26',
 'description': 'Wisner Baum LLP, a Los Angeles-based law firm specializing in '
                'litigation against major corporations, experienced a data '
                'breach where an unauthorized third party accessed its systems '
                'and potentially exfiltrated files containing sensitive '
                'personal data, including names, driver’s license numbers, '
                'bank account details, and medical records.',
 'impact': {'data_compromised': 'Sensitive personal information, including '
                                'names, driver’s license numbers, bank account '
                                'and routing details, and medical records',
            'identity_theft_risk': 'High',
            'legal_liabilities': 'Potential legal action',
            'payment_information_risk': 'High',
            'systems_affected': 'IT network'},
 'investigation_status': 'Ongoing',
 'references': [{'date_accessed': '2026-01-26',
                 'source': 'Edelson Lechtzin LLP Announcement'}],
 'regulatory_compliance': {'legal_actions': 'Potential class action lawsuit'},
 'response': {'third_party_assistance': 'Edelson Lechtzin LLP (investigation)'},
 'threat_actor': 'Unauthorized third party',
 'title': 'Wisner Baum LLP Data Breach Investigation',
 'type': 'Data Breach'}