Earlier this month, Twitter was playing around with a new setting which allowed users to switch to HTTPS on their website. The feature was eventually pulled out, however, you can always visit Twitter at https://www.twitter.com to use a secure connection.
Facebook, today announced their continued attempts at providing security to their users by allowing users to switch to secure browsing using HTTPS on the site. The new feature is opt-in and users will have to visit their "Account settings" page to turn on HTTPS browsing on Facebook.
To enable HTTPS support on Facebook, head over to this page and click on the "change" link next to "Account Security". You will be shown an option to turn on secure browsing for Facebook. Click on the checkbox next to the option and then hit the Save button to start browsing Facebook securely.
Please note, the secure browsing option is not yet available to all users and will be rolled out gradually. In addition to providing users with secure browsing. Facebook is also going to change the captchas on their site to social authentication. So instead of displaying you with a captcha while adding links or during other activities on Facebook, you will now be shown a picture of your friend and will be asked to identify them.
Instead of showing you a traditional captcha on Facebook, one of the ways we may help verify your identity is through social authentication. We will show you a few pictures of your friends and ask you to name the person in those photos. Hackers halfway across the world might know your password, but they don’t know who your friends are.
The new social authentication is a step towards is to thwart attempts by hackers who could easily crack your passwords but might not know who your friends are. Social Authentication is a beta feature and is being tested out currently, so don’t expect it to be perfect.