April 7, 2026

Jones Day, a major law firm, has confirmed a security breach involving unauthorized access to a selection of their client files. This incident, attributed to the cybercriminal group known as Silent Ransom Group (SRG), targeted the firm’s Federal Circuit team, allegedly focusing on team leader Greg Castanias, though the firm has not confirmed the identities of the affected clients or the specifics of the compromised files.
SRG, also whimsically named Luna Moth, Chatty Spider, and UNC3753, has been on the FBI's radar since 2023, primarily targeting law firms for the sensitive nature of their data. However, recent diversions within the FBI, including a controversial internal shakeup and reallocation of agents to less critical tasks, have left the agency's cybersecurity fortifications wanting.
The method of the breach was not through high-tech means but rather through social engineering tactics. SRG reportedly used phishing emails and calls impersonating IT services to gain remote access and subsequently transfer out data using basic file-sharing tools. This breach is a repeat offense for Jones Day, which was previously entangled in the 2021 Accellion file transfer software hack that exposed sensitive client information online.
Negotiations between Jones Day and SRG broke down after the law firm resisted paying the demanded $13 million ransom. SRG has threatened to leak all stolen data, further intensifying the potential fallout by promising to contact employees and clients directly and to resume their attacks.
The breach not only raises questions about Jones Day's cybersecurity measures but also casts a stark light on the current state of cyber defense at national levels, with the FBI seemingly preoccupied. The previous FBI alert about SRG highlighted the high risk to law firms due to the valuable data they hold, yet the effectiveness of such warnings is questionable when juxtaposed with the agency's recent distractions, ranging from internal politics to mismanagement.
As for the reputational damage, it is compounded by SRG's threats to expose the firm's alleged connections revealed in the Epstein files, involving ties with child predators. This recent breach serves as a critical wake-up call for both private legal entities and national security agencies to reassess and fortify their cybersecurity protocols and focus.