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Simon Willison’s Weblog

New Facebook clickjacking attack in the wild. I’m not sure why Facebook don’t use frame-busting JavaScript to avoid this kind of thing. The attack is pretty crafty—a Facebook page is positioned with everything obscured bar part of the blue “share this” button, and a fake “Human Test” asks the user to find and click the blue button to continue.

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7 comments

  1. I agree that Facebook should do more to prevent this. They're lucky it's such an unconvincing attack; I bet it won't be very widespread.

    Here's the attack uncovered for anyone who wants to take a peek (just don't click share):

    http://j.mp/fbclickjacking

    Chris Shiflett - 22nd December 2009 20:11 - #

  2. The view count for this YouTube video is probably the best indicator of the attack's spread:

    http://www.youtube.com/watch?v=abal5F862ss

    Chris Shiflett - 22nd December 2009 21:28 - #

  3. This is actually the second widespread clickjacking attack against Facebook; the first one was even more subtle.

    I once put together a list of Facebook activities that could be executed via clickjacking: http://theharmonyguy.com/2009/10/14/the-dangers-of -clickjacking-with-facebook/

    Given the range of possibilities, I'm also surprised Facebook doesn't offer any kind of clickjacking prevention.

    theharmonyguy - 23rd December 2009 01:49 - #

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