You're right. Fb doesn't seem to be using letsencrypt. https://crt.sh/?q=facebook.com https://crt.sh/?q=facebook.com On a side note, the amount of phishing si

You're right. Fb doesn't seem to be using letsencrypt. https://crt.sh/?q=facebook.com https://crt.sh/?q=facebook.com On a side note, the amount of phishing sites using letsencrypt and having a domain similar to facebook.com is quite appalling.