The FBI issued a warning about the cybercriminal group Silent Ransom Group (SRG) and its recent social engineering calls and callback phishing emails targeting law firms in the United States. The government agency noted that while the group has historically targeted multiple industries, it has consistently focused on legal services since the spring of 2023. According to the FBI’s notification published last Friday, SRG — also known as Luna Moth, UNC3753, and Chatty Spider — has been developing callback phishing email schemes for years, at least since 2022. These schemes traditionally involve offering fake subscription plans while impersonating well-known subscription-based businesses. However, Luna Moth’s tactics have recently evolved to include a more information technology (IT)-oriented approach. “As of March 2025, SRG was observed changing their tactics to calling individuals and posing as an employee from their company’s IT department,” states the document. “SRG will then direc...