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This Thursday, Oct. 24, 2013 file photo shows Snapchat CEO Evan Spiegel in Los Angeles. Snapchat, the disappearing-message service, has been quiet following a security breach that allowed hackers to collect the usernames and phone numbers of millions of its users. Snapchat said Thursday, Jan. 2, 2014 that it is assessing the situation, but did not have further comment. Earlier in the week, hackers reportedly published 4.6 million Snapchat usernames and phone numbers on a website called snapchatdb.info, which has since been suspended. (AP Photo/Jae C. Hong)

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