Heartbleed,discovered by Finnish security firm Codenomicon,along with Google Inc,researcher who was working seperatly ,affects around two thirds of prominent websites on the www.
What is Heartbleed ?
Why is it a Big deal?
How does it works?
What can we do to protect ourself?
For now,you can change the password for the site that have adopted the fix ,and make sure you don’t use the same login criteria for other websites.
Facebook:(was it affected?unclear)
Facebook has already deployed a patch nonetheless,so you can go ahead and change its password.
Twitter:(was it affected?unclear)
The company has yet to comment over the threat.It’s better you not use a password common with other service.
Google has clarified that users do not need to change their password ,but because of the previous vulnerability,its better to change.