Do you access your Facebook or Twitter account while you are on a
public network like your college’s or office’s unsecured wifi.Then this
is the time that you should think about your account security.If you
think that facebook or Twitter are secured websites then it’s the time
to face the reality they are not secured.Whenever you login into your
facebook or twiiter account check the address bar of your browser you
will see something like http://www.facebook.com/home.php? Similar is the case with twitter.They use http protocol instead of secured https protocol.But if you login into your gmail account you will notice that it uses https protocol.