DeadLock ransomware group exploit Polygon smart contracts for stealth

DeadLock, a ransomware group that first emerged in July 2025, has made news again, and this time it is for abusing Polygon blockchain smart contracts to manage and rotate proxy server addresses, according to research published by cybersecurity firm Group-IB.  The ransomware operation uses blockchain-based smart contracts to store the group’s proxy server URL, allowing […]