BrianFagioli writes: Cloudflare has launched Precursor, a new behavioral bot detection system that monitors mouse movement, typing cadence, scrolling, clipboard activity, page visibility, and other signals across an entire browsing session. The system is designed to catch advanced bots that can run JavaScript, use real browsers, and pass traditional CAPTCHA challenges. Cloudflare says Precursor does not record actual keystrokes and instead studies timing and rhythm. The company also says the data is not tied to user identities or persistent profiles. Even so, software that watches how people move and type throughout a visit raises privacy concerns, especially as Cloudflare claims bots now ge...