Inside the lethal trifecta: Blast radius reduction in AI agent deployments

Feed of Sophos blog posts (May 2026) covering AI-driven defensive and offensive trends, identity security, and recent malware incidents. Key items: guidance on reducing blast radius for AI agent deployments; use of GPT-5.5-Cyber in defender tooling; analysis of AI-augmented ransomware tactics; a Sophos Endpoint case blocking a novel supply‑chain attack; and a Threat Research post (“Donuts and Beagles”) describing a malicious imitation of Anthropic’s Claude site that uses DLL sideloading to deliver a backdoor. Also includes reporting on identity security survey results, network security changes