Simon Willison's Warning: The Lethal Trifecta Destroying AI Agent Security

Private data × Untrusted content × External communication = Perfect security disaster, and it's already happening everywhere

Claude Sonnet 5 Incoming: The Agentic Swarm Era

Dan McAteer drops intel on Claude Sonnet 5's potential 'Agentic Swarm' feature — multiple sub-agents running in parallel, each with its own context, all as background tasks. We're entering the multiverse of parallel AI workers.