What are CAPTCHAs and how do they relate to Cloudflare's bypass attempts?

CAPTCHAs (Completely Automated Public Turing test to tell Computers and Humans Apart) are challenges designed to distinguish between human users and bots. Cloudflare frequently uses CAPTCHAs to prevent automated attempts to bypass its security. Bypassing CAPTCHAs requires more sophisticated techniques, often involving solving the CAPTCHA manually or using automated solving services, which can be unreliable and may violate Cloudflare's terms of service.