Cloudflare 推出 Precursor 行为分析引擎，持续检测机器人
原标题：Cloudflare's Precursor Detects Bots and AI Agents Through Continuous Behavioral Analysis
AI 摘要
Cloudflare 推出了 Precursor，一种客户端行为分析引擎，通过持续评估鼠标移动和键盘输入等会话交互来检测复杂的机器人和 AI 代理，不再依赖 CAPTCHA 等一次性挑战。该引擎自动注入轻量级脚本，实时分析行为信号，并采用隐私保护的遥测技术。Precursor 作为 Enterprise Bot Management 的一部分，目前对所有 Cloudflare 客户开放测试版，免费使用至正式发布。
正文节选
Cloudflare recently introduced Precursor, a client-side behavioral analysis engine that continuously evaluates session interactions, such as mouse movements and keyboard timing, to improve detection of sophisticated bots and AI agents without relying solely on one-time challenges like CAPTCHAs. According to the documentation, Precursor uses continuous, session-based client signals to catch advanced bots that try to mimic human behavior over a full user journey, marking an industry shift from sta