Deprecating the __cfduid cookie

What this post added

This post details the deprecation of the __cfduid cookie, which was previously used as one signal in Cloudflare's bot detection machine learning models. The cookie's value was derived from an MD5 hash of various user attributes, but it did not tie a cookie to a specific person. Cloudflare is transitioning away from this cookie to enhance privacy, relying on other signals and evolving its bot detection algorithms to not require end-user IP addresses.