Week in Security: Acrobat Zero-Day, AI Exploit Engines and Global Intrusions Unfold

This week’s security recap flags a widespread Adobe Acrobat Reader zero-day (CVE-2026-34621) under active exploitation, AI-enabled vulnerability discovery and exploit tooling (Anthropic Mythos), and a wave of state-sponsored and criminal activity—from Iran- and North Korea-linked campaigns targeting ICS and crypto infrastructure to fileless malware, new RATs, and a Windows kernel rootkit (RegPhantom). It also highlights fiber-optic eavesdropping research, a major botnet takedown, and notable security tools and frameworks (MITRE F3, Betterleaks, etc.). Patch quickly, monitor for AI-driven threats, and watch for phishing and supply-chain risks.