engine - 9:45 am on Feb 14, 2012 (gmt 0)

Twitter Makes HTTPS On By Default [blog.twitter.com]

Now, HTTPS will be on by default for all users, whenever you sign in to Twitter.com. If you prefer not use it, you can turn it off on your Account Settings page. HTTPS is one of the best ways to keep your account safe and it will only get better as we continue to improve HTTPS support on our web and mobile clients.