Silent Ransom Group Targets U.S. Law Firms with Aggressive Extortion Tactics
The Silent Ransom Group, a cyber extortion gang, is actively targeting U.S. law firms and professional services organizations through sophisticated social engineering attacks. According to a report by cybersecurity firm Mandiant, the group, also known as UNC3753, Luna Moth, and Chatty Spider, has been conducting these attacks since January 2026. The attackers use invoice-themed phishing emails to initiate contact, followed by phone calls impersonating IT staff to gain remote access. Once inside, they exfiltrate sensitive legal and financial documents, demanding ransoms within 30 minutes of leaving the victim's network. The group is known for its aggressive tactics, including threatening to contact clients directly if demands are not met. 
