Wisner Baum

Profile narrative

Wisner Baum is a plaintiffs' law firm headquartered in the United States of America, with its offices located in Los Angeles. The firm provides legal representation to plaintiffs in a variety of litigation matters. As a plaintiffs‑oriented practice, it focuses on pursuing claims on behalf of individuals and groups. Its core work involves preparing and prosecuting cases in state and federal courts.

On October 8, 2025, Wisner Baum experienced a data breach that exposed Social Security numbers, bank account information, and medical records of individuals whose data the firm held. Investigators traced the breach to a cyber‑attack on the firewall provider SonicWall. After discovering the incident, the firm notified the attorneys general of Vermont and California in accordance with state breach‑notification laws. The notifications triggered regulatory scrutiny of the firm’s data‑protection practices.

Two class‑action lawsuits were subsequently filed against Wisner Baum by the law firms Wucetich & Korovilas and Cole & Van Note. The plaintiffs allege that the firm failed to adequately protect the compromised personal information. They contend that the firm’s security measures were insufficient to prevent the unauthorized access to sensitive data. The lawsuits seek damages for the alleged negligence in safeguarding the information.

The breach and ensuing litigation have highlighted the cybersecurity risks faced by legal service providers that handle confidential client information. While the firm’s primary role is to advocate for plaintiffs in litigation, the incident underscored the importance of robust information‑security controls. The notifications to state attorneys general demonstrate that the firm complied with applicable disclosure requirements. The ongoing litigation continues to shape public perceptions of the firm’s data‑handling practices.

The breach and resulting litigation have become part of Wisner Baum’s recent public profile. The firm’s experience illustrates how a cyber‑security incident can affect a legal practice that handles sensitive personal information. It also shows the interplay between regulatory notifications, private litigation, and reputational consequences for professional‑services organizations. These developments underscore the need for law firms to consider data‑protection measures as part of their operational framework.

Incidents

1 incident linked to this organisation.