Twitter has a working two-step security solution undergoing internal testing before incrementally rolling it out to users, something it hopes to begin doing shortly, Wired has learned.
Such a system will drastically reduce the risk of Twitter users having their accounts hacked, something that has been experienced by everyday users and major companies like the Associated Press, the BBC and 60 Minutes.
Two-step (also known as two-factor or multifactor) authentication can prevent a hacker from gaining access to an account far more effectively than a password alone. When logging in from a new location, it requires users to enter a password and a randomly generated code sent to a device, typically via a text message or smartphone application. In other words, accessing an account requires having two things: something you know (the password) and something you have (a previously registered device).
Twitter posted a job listing for software engineers in February to build such a solution.
Continued : http://www.wired.com/threatlevel/2013/04/twitter-authentication/
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