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.