Wisner Baum

Profile narrative

Wisner Baum is a plaintiffs’ law firm headquartered in Los Angeles, United States. The firm provides legal representation to individuals pursuing claims in civil litigation. Its work involves advising clients, preparing legal documents, and advocating in court or settlement negotiations. As part of its legal work, the firm routinely collects and maintains sensitive client information, including Social Security numbers, financial account details, and medical records. This data handling is necessary to build and support cases on behalf of its clients. The firm operates within the broader legal services market, serving clients who seek redress for alleged harms caused by corporations or other entities. Its location in Los Angeles positions it within a major metropolitan area with a substantial volume of litigation activity. The firm’s role is limited to advocacy for plaintiffs, distinguishing it from defense‑oriented practices. No further details about its size, partner count, or annual revenue are publicly disclosed in the provided sources. The firm’s core function is to advise, negotiate, and litigate on behalf of those who allege they have suffered legal wrongs.

In October 2025, Wisner Baum experienced a data breach that exposed confidential client information. The breach originated from a cyberattack on SonicWall, the firm’s firewall provider, which subsequently notified Wisner Baum of the incident. Compromised data included Social Security numbers, bank account information, and medical records of the firm’s clients. Following the breach, two separate class‑action lawsuits were filed against Wisner Baum in federal court. The plaintiffs in those actions were represented by the law firms Wucetich & Korovilas and Cole & Van Note. The lawsuits concern the alleged failure to protect client data that was exposed in the breach. The incident highlights the risks associated with storing sensitive information in legal practice environments. It also underscores the potential liability that law firms may face when third‑party security providers suffer breaches. No further details about the outcome of the litigation or any remedial measures taken by Wisner Baum are available in the supplied sources. The event remains a notable example of how cybersecurity incidents can directly impact legal service providers and their clients.

Incidents

1 incident linked to this organisation.