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News

Two Factor Authentication Using Mobile Phone The Right Move For Google

Tenable Network Security : 11 February, 2011  (Technical Article)
Tenable Network Security takes a positive view of Google's move into two factor authentication using mobile phones as the token
Marcus Ranum, CSO of Tenable Network Security comments on Google (2FA) login announcement. "Two factor authentication remains one of the coolest and smartest ideas in computer security. The concept goes back to the 1980s, and few security ideas can claim to have such longevity!



"What Google has done is wonderful because it doesn't merely ask for 'something you know and something you have' it wants 'something you know and something you value a lot'.  In the past we've seen that people are willing to give away an authentication credential in return for very little, but most people will be much more precious about hanging onto their phone.



"Even more importantly, a mobile phone is a high value item so a spammer would have to buy a new phone each time one of their accounts got shut down and the associated mobile phone got blacklisted. What that does is brings a high external cost into the equation. This is a very good move."
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