The past week has been dominated by the unimaginable mess that Microsoft has created with what have become multiple failed attempts to patch the two PrintNightmare flaws, and the continuing "Cleanup on Aisle 5" following what is widely regarded as the single most significant ransomware supply chain attack event ever. So today we first catch up on the still sadly relevant PrintNightmare from which the industry has been unable to awaken. We'll cover a few more bits of security news. Then, as planned, we'll take a deep dive into the detailed operation of the REvil/Sodinokibi malware's cryptographic design.