The researchers also managed to get an Android antivirus app to download and install fake virus signatures that then identified the antivirus tool as a virus and gave the user the opportunity to remove it.

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For example, the Cover Feed looks fantastic on tablets -- "it looks like a gorgeous personalized magazine about your friends" says Mosseri -- but neither viewing a massive 16 x 24 grid of icons in the app tray nor making a six-inch swipe to remove a Chat Head provides an ideal user experience.

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Most free, user-based Web sites will quickly remove any offensive language added by an unscrupulous visitor.

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Last year independent hacker Moxie Marlinspike created a tool call SSLstrip to invisibly remove the SSL protections on secure sites when a user click through from an insecure site.

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The only way they might run afoul od COPPA is if they were alerted that a particular user was underage and they failed to remove that account from their network.

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The social network's site governance page also has a new article explaining some of its upcoming policy changes in layman's terms, which eases readers into the language it uses to describe how it shares information with affiliates, clarifies user content ownership and promises not to remove certain privacy controls.

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The Enhancer recommends the optimal set of creative choices based on technical analysis of the user's video and social data to remove guesswork and make the experience fun and creative.

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