Cloudflare launches Precursor bot detection

Precursor shifts the security paradigm from static, request-level verification to continuous, session-level authentication, significantly raising the cost of evasion for automated agents. By monitoring physical human limitations like muscle tremor frequencies and cognitive reaction delays, it creates physics-constrained models that are computationally expensive to replicate. Furthermore, injecting the telemetry client automatically at the network edge allows zero-configuration deployment without code changes, while preserving privacy by collecting behavioral metadata rather than content.