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In this Wednesday, Feb. 27, 2013 photo illustration, hands type on a computer keyboard in Los Angeles. In the wake of the Heartbleed security threat, many security experts recommend a second layer of authentication _ typically in the form of a numeric code sent as a text message. You enter that code on the website to verify that it’s really you and not a hacker who doesn’t have your phone.

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Tech Tips: Add 2nd layer of protection online

If the Heartbleed security threat teaches us anything, it's that passwords don't offer total protection.

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