On: Ask HN: Does Cloudflare block HN comments if you h...

[tcmb]

Isn't the SSL certificate being issued by Cloudflare a giveaway?

I'm guessing it's a sufficient condition, bit not a necessary one. I.e, a could be using Cloudflare's WAF with a SSL cert issued by somebody else.

[judge2020 → tcmb]

Cloudflare can issue from Google Trust Services/Digicert with ACM[0] and often does even without ACM (although maybe only for Business/Enterprise domains).

0: https://developers.cloudflare.com/ssl/edge-certificates/adva...