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Hack attack: Protecting your privacy in the online world

Nov. 24: Too many of us are using the same username and password over and over again, which can lead to an increased risk online. To guard against hackers, use multiple layers of authentication and change passwords often. NBC's Tom Costello reports. Too many of us are using the same username and password over and over again, which can lead to an increased risk online. To guard against hackers, use multiple layers of authentication and change passwords often. NBC's Tom Costello reports. (TODAY)




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http://video.today.msnbc.msn.com/today/49947719/