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    Tweet self-propagates through TweetDeck

    NEW YORK — A tweet containing a snippet of computer code propagated itself through Twitter Wednesday by taking advantage of a security flaw in the company’s TweetDeck application.

    In response, Twitter shut down the application’s access to tweets for about an hour Wednesday while fixing the problem.

    The two-line message was automatically ‘‘retweeted,’’ or sent out again, when received by TweetDeck, a computer application for Twitter’s power users. Affected tweeters saw pop-up windows on their screens. The tweet was sent out tens of thousands of times but left its victims otherwise unharmed.

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    It’s not the first time tweets containing JavaScript code have self-propagated through security holes in Twitter. The last major outbreak was in 2010.

    Associated Press