BluMedia, blieve me your all sites under high risq ,if you dont know how to stop them !!
try to use mailed pass with random digits ..dont let people chhose their pass and alphanumeric ofcourse
their user pass must be
[email protected]
pass=(mailed) XkRt23 (sandom at least 6 caractere)
And when you make them enter your site dont use pop-up classical login use https form based login
http(s)://members.exemple.com/(randomname)/index.html