Slightly off topic but TLS is a must, so many things can go wrong with unencrypted sites and the major web browser has in respective latest release started to mark all non-encrypted website with a login form as "Insecure".

SSLlabs is the go to place for all SSL/TLS tests ;)

...and for those who are really interested in the topic of SSL/TLS I recommend the book "Bulletproof SSL and TLS" as well as the newsletter at [1,2]

[1] https://www.feistyduck.com/books/bulletproof-ssl-and-tls/
[2] https://www.feistyduck.com/bulletproof-tls-newsletter/

--