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Facebook Bug Lets Hackers Delete Friends

swandives writes "There's lot of talk about Facebook and privacy at the moment, but a bug in Facebook's website lets hackers delete Facebook friends without permission. Steven Abbagnaro, a student from Marist College in Poughkeepsie, New York, reported the flaw, writing proof-of-concept code that scrapes publicly available data from users' Facebook pages and deletes all of their friends, one by one. The victim first has to click on a malicious link while logged into Facebook. Abbagnaro's code exploits the same underlying flaw that was first reported by Alert Logic security analyst M.J. Keith who discovered a cross-site request forgery bug, where the website doesn't properly check code sent by users' browsers to ensure that they were authorized to make changes on the site."

5 of 89 comments (clear)

  1. This is not a bug by Anonymous Coward · · Score: 5, Funny

    "It's a feature."

  2. Raising false hopes by Thanshin · · Score: 5, Funny

    In case you didn't RTFA, you can only delete the link between your facebook accounts, not the friends themselves.

    And so dies our intricate plan to befriend our enemies and erase them from existance.

    1. Re:Raising false hopes by MichaelSmith · · Score: 5, Informative

      They're a bunch of spoil sports:

      5/11/2010 – Facebook notified of vulnerability
      5/13/2010 – Work begins with Facebook to patch flaw.
      5/14/2010 – Facebook confirms flaw is patched.

      5/24/2010 – Post on slashdot.

    2. Re:Raising false hopes by Thanshin · · Score: 5, Funny

      They're a bunch of spoil sports:
      5/11/2010 - Facebook notified of vulnerability
      5/13/2010 - Work begins with Facebook to patch flaw.
      5/14/2010 - Facebook confirms flaw is patched.

      5/24/2010 - Post on slashdot.

      5/28/2010 - Dupe post on Slashdot.
      6/15/2010 - Trupe post on Slashdot.
      6/15/2010 - AskSlashdot question about whether dupe+1 = trupe or redupe. Links to original post.
      6/15/2010 - Slashdot is slashdotted, creating a singular paradox.
      5/24/2010 - The end of the world as we know it.

  3. Social networking sucks by asherlev · · Score: 5, Insightful

    I deleted my Facebook account a week or so ago, and I was, at the time, hoping that diaspora would end up being something besides vaporware. After a week without it, though, I find myself pleased with my lack of knowledge about what people I didn't like in high school had for dinner.