About Wisner Baum LLP
Wisner Baum LLP, a commercial entity based in Los Angeles, California, experienced a data breach impacting its information technology network. The breach was reported by Sara Goldstein, an outside counsel from Baker & Hostetler LLP. The breach involved unauthorized access to the firm’s external systems, affecting an undisclosed number of individuals, including 56 Maine residents. The breach occurred over a two-day period in October 2025 but was not discovered until December 15, 2025.
What Happened
Wisner Baum LLP completed its investigation of an incident that involved unauthorized activity in its information technology (“IT”) network. Upon identifying the activity, Wisner Baum isolated the computers from its IT network and launched an investigation. Through its investigation, Wisner Baum determined that an unauthorized party gained access to its IT network and may have acquired files maintained on certain computer systems between October 8, 2025 and October 9, 2025.
The breach involved unauthorized access to Wisner Baum’s IT network, potentially compromising files containing sensitive information of clients and affiliated individuals, including Social Security numbers, driver’s license numbers, and bank account details. The incident affected individuals between October 8 and October 9, 2025, and was discovered on December 15, 2025.
Next Steps
Affected users should remain vigilant for potential fraud or identity theft by monitoring their account statements and credit reports for unauthorized activity. Wisner Baum LLP has begun mailing notification letters to impacted individuals, providing details of the breach and offering guidance on protective measures. It is advisable to contact the dedicated call center established by Wisner Baum for any questions or concerns regarding the breach. Users should also consider placing fraud alerts or security freezes on their credit files to prevent further unauthorized access.
Identity Theft Protection Services
Wisner Baum LLP is offering complimentary one-year memberships to credit monitoring and identity theft protection services through CyberScout for individuals whose Social Security and/or driver’s license numbers were involved in the incident. These services include credit monitoring and identity theft protection to help safeguard personal information from further misuse. Additionally, affected individuals have access to a toll-free call center for support and assistance in managing the aftermath of the breach.