Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for wiki.earthempires.com. The certificate is only valid for the following names: alphaui.earthempires.com, earthempires.com, earthempires.evolution2025.com, earthempires.haagsma.ca, ee.haagsma.ca, m.earthempires.com, mobile.earthempires.com, pang.earthempires.com, php
fluff.ee.haagsma.ca, qz.earthempires.com, slagpit.earthempires.com,
http://www.earthempires.com, zarcon.earthempires.com
Error code: SSL_ERROR_BAD_CERT_DOMAIN
they just didnt update the certificate
if your going to contribute and make an account id suggest using a new user/pass but its not a big deal if your just reading stuff
https://wiki.earthempires.com/index.php/Main_Page
im not sure when it was last updated though