Are there plans to support https?
I think it is very ironic to have a site about IT security which itself has such a huge security issue.
Edit: In the mean time the situation got worse: Now accounts can be created directly on the login dispatch page. Since that page is loaded via http, an attacker may be able to modify it, to send a copy of the password elsewhere.
Edit 4: The Login/Creation page loads an iframe via a https connection, so a passive attacker cannot sniff the password. The ability to manipulate the http-traffic of the login-page is required in order to get rid of this https-iframe and do malicious things.
src
attribute of that iframe.http://security.stackexchange.com/users/login
. In addition to the page itself, it includes a number of JavaScript files which are loaded via http connections. It does not help that the real page includes an iframe which is loaded via https. It is very easy for an attacker, who can manipulate http, to define style attributes via JavaScript that moves that iframe out of the way and replace it with his own malicious form that sends him a copy of the username and password.