WordPress Security – logins
http://wordpress.org/support/topic/wp-loginphp-7?replies=19
http://wordpress.org/support/topic/how-to-protect-wp-login-and-wp-admin?replies=2
http://codex.wordpress.org/Brute_Force_Attacks
http://wordpress.org/support/topic/cant-we-just-disable-wp-loginphp?replies=6