Introducing Precursor: detecting agentic behavior with continuous client-side signals

Between March and July 2026 Cloudflare published a series of security-focused posts covering product launches, hardening efforts, and research. Key themes: new detection engines (Precursor continuous behavioral validation, Client‑Side Security, Account Abuse Protection, AI Security for Apps GA), OAuth and non‑human identity improvements (Managed and Self‑Managed OAuth, scoped API tokens, automated revocation), real‑time threat intel integrated into WAF (cf.intel), post‑quantum strategy and deployments (ML‑DSA advocacy, IPsec hybrid ML‑KEM GA, 2029 PQ roadmap), defensive architecture for AI/LLM