Defcon's new badge is a security key you can see inside

An Ars Technica security RSS collection covering major 2026 cybersecurity developments, including active exploitation of a maximum-severity Microsoft Exchange flaw by Russian state-linked actors, Windows and Secure Boot vulnerabilities, router targeting, ransomware, supply-chain risks, AI-assisted cyberattacks, prompt injection, botnet assembly, and cryptographic weaknesses. The collection indicates significant enterprise, government, cloud, endpoint, and AI-agent security risk, with several reports describing active exploitation or real-world compromise.