This pack covers a single high-severity campaign by Silent Ransom Group (Luna Moth / UNC3753 / Chatty Spider), a financially motivated threat actor conducting pure data-theft extortion against U.S. law firms and professional services organizations via vishing, legitimate RMM tool abuse, and, in a critical escalation, reported physical presence at victim sites. The attack chain requires no malware or exploited CVEs, rendering traditional AV and patch-based defenses ineffective; detection depends entirely on behavioral monitoring, process telemetry, and policy controls. Immediate attention is required to audit active RMM sessions, enforce application allowlisting, and verify building access logs for any organization in the legal or professional services sector.