Ransomware Over WebChat: How Deadlock Used Polygon Blockchain and Session-Style Crypto for Negotiations

Deadlock ransomware operators have embedded a covert, Session-style encrypted chat client into HTML ransom notes, using Polygon blockchain smart contracts as decentralized, censorship-resistant C2 beacons to dynamically route negotiations through privacy-focused service nodes—signaling a new era of ransomware leveraging smart contracts and decentralized networks for resilient, anonymous victim communications.