Here's Everywhere You Should Enable Two-Factor Authentication Right Now

I use Google's two-factor system. It can be a pain, but it does give a feeling of safety.

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Source:

http://lifehacker.com/5938565/heres-everywhere-you-should-enable-two+factor-authentication-right-now?utm_campaign=socialflow_lifehacker_facebook&utm_source=lifehacker_facebook&utm_medium=socialflow

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