(I'm not sure how that is possible since traffic is supposed to be encrypted).Cloudflare decrypts all traffic when it hits it -- otherwise it couldn't really do much, need lots of details on the request to do ddos protection/waf/etc
No matter what website I use, if my email or username contains the phrase "Larwri", I'm bombarded with hcaptcha, SMS verification requirements, and more.Cloudflare doesn't use hcaptcha, nor would it do sms verification stuff, etc. Only real possibility that comes to mind is the Cloudflare WAF does scanning for urls, uploaded bodies, etc, but shouldn't be on a specific term like that, and it would be either an outright block or cloudflare turnstile challenge. I would flip this around and look for other common factors. For example if for all these sites you're using the same IP/connection, or email, those could be flagged, etc.
For hcaptcha, I thought Cloudflare implemented it per their blog post here, is this no longer the case?No, they use their own solution called turnstile nowadays. It looks like this:
