Syrian Electronic Army took this seriously and defaced the website of RSA Conference with a short reply to Winkler’s comments from the presentation.   Winkler today in a blog post went on explaining how the Syrian Electronic Army managed to deface RSA Conference website
  Winkler said the Syrian Electronic Army then managed to update the DNS information of the website and redirect it to the deface page. last tweet from the Syrian Electronic Army suggest that they may carry on with some more attack in the coming days

Syrian Electronic Army hacks RSA Conference website after presentation at RSA conference irks them   TechWorm - 84