— Kevin Smith (@OfficialKLS) June 11, 2014
Initially TweetDeck announced that the issue could be fixed by signing off and back onto TweetDeck, but less than 30 minutes later they took the service off line:
We’ve temporarily taken TweetDeck services down to assess today’s earlier security issue. We’ll update when services are back up.
— TweetDeck (@TweetDeck) June 11, 2014
Postscript: After about an hour offline, TweetDeck service was restored.