A major data breach at prominent U.S. law firm Wolf Haldenstein has exposed sensitive personal information of approximately 3.5 million individuals, the company disclosed recently.
The breach occurred on December 13, 2023, but was not discovered until April 18, 2024, following detection of suspicious network activity. Upon discovery, the firm engaged cybersecurity experts to investigate the incident.
The exposed data includes highly sensitive personal information such as:
- Full names
- Social Security numbers
- Dates of birth
- Current and past addresses
- Government ID copies
- Medical diagnosis information
- Medical claims data
- Police and investigative reports
While Wolf Haldenstein maintains there is currently no evidence of data misuse, the breadth of exposed information puts affected individuals at risk of identity theft, targeted phishing attacks, and other fraudulent activities.
The law firm, which specializes in complex class action litigation across multiple practice areas, has faced challenges identifying and notifying all impacted individuals due to incomplete contact information.
As a protective measure, Wolf Haldenstein is offering complimentary credit monitoring services to affected individuals. Those concerned about their data exposure can contact the firm directly to enroll in the monitoring program.
Security experts recommend that potentially impacted individuals:
- Monitor financial accounts and credit reports regularly
- Be vigilant against suspicious communications
- Consider placing fraud alerts on credit files
- Watch for unusual activity in medical billing
- Exercise caution with unexpected requests for personal information
The incident adds to a concerning pattern of cyberattacks targeting organizations that maintain sensitive personal data, including healthcare providers and legal firms.
Wolf Haldenstein continues to work with cybersecurity specialists to strengthen its network security and prevent future incidents while supporting affected individuals in protecting their personal information.