2026 Jones Day - phishing incident exposed dated files for 10 clients
Data compromised
Limited dated files for 10 clients; specific client names and file categories not publicly identified
Technical writeup
Jones Day told Reuters it experienced a cyber phishing incident in which an unauthorized third party accessed a limited number of dated files for 10 clients. The law firm said all affected clients were notified. Reuters reported that Silent Ransom Group posted data on March 30, 2026, and claimed responsibility for the hack.
Root cause
Phishing incident leading to unauthorized access to law-firm client files