Wisner Baum Data Breach Lawsuit Investigation
Updated: January 23, 2026 | Call for a free, confidential case review if you received a breach notice.
Wisner Baum LLP (“Wisner Baum”) has informed the California Attorney General of a network intrusion that exposed sensitive personal and medical information. Individuals notified on January 23, 2026 may be entitled to compensation and complimentary identity-protection services.
Key Facts at a Glance
- Breach window: October 8 – October 9, 2025
- Discovery date: October 9, 2025
- Consumer notices mailed: January 23, 2026
- Data involved: name, Social Security number, bank account and routing numbers, medical information
- Identity-protection offered: 12-month single-bureau credit monitoring and fraud assistance through Cyberscout (TransUnion)
Timeline of Events
According to the firm’s notice to California regulators, Wisner Baum detected unusual network activity on October 9, 2025 and immediately secured its systems. A forensic investigation confirmed that an unauthorized third party had accessed the network between October 8 and October 9, 2025 and may have obtained certain files containing personal information.
After concluding its review of affected data, Wisner Baum began notifying impacted individuals on January 23, 2026, in compliance with state data-breach laws.
Information Exposed
The files potentially accessed contained one or more of the following data elements:
- Name
- Social Security number
- Bank account number
- Bank routing number
- Medical information
While there is no confirmation of misuse, these data points are highly valuable to cybercriminals for identity theft and financial fraud.
Company Response
The firm reports that it:
- Secured affected systems immediately upon discovery
- Engaged independent cybersecurity professionals
- Implemented stronger protections and continuous monitoring
- Requested deletion of any data that might have been taken
- Is providing 12-month single-bureau credit monitoring, credit reports, credit scores, and proactive fraud assistance via Cyberscout at no cost to affected individuals
Next Steps for Impacted Individuals
- Enroll in the free Cyberscout credit-monitoring service within 90 days of the notice date using the unique code provided in your letter.
- Review bank, credit-card, and medical insurance statements for unfamiliar charges.
- Request free annual credit reports and place a fraud alert or security freeze if suspicious activity appears.
- Retain all breach-related correspondence; it may be important for any legal claim.
- Contact an experienced data-privacy attorney to discuss compensation options.
Company Overview
Frequently Asked Questions
- I received a data breach letter from Wisner Baum — what should I do?
- Enroll in the complimentary credit-monitoring service within 90 days, watch your financial accounts closely, and consider seeking legal advice about your rights.
- How do I submit a claim related to the Wisner Baum data breach?
- Contact a privacy-rights attorney or class-action firm to discuss potential claims. Keep your breach notice and any evidence of fraud for documentation.
- What information did the Wisner Baum breach expose?
- The incident may have exposed your name, Social Security number, bank account and routing numbers, and medical information.
- Did Wisner Baum offer credit monitoring, and for how long?
- Yes. The firm is offering single-bureau credit monitoring, credit reports, credit scores, and fraud assistance for 12 months through Cyberscout.
- How can I get the official breach notice (PDF) for Wisner Baum?
- You can download it directly from the California Attorney General’s website using the link provided above.
