In Pictures: The most mortifying moments in IT security history

From Lockheed Martin and HBGary Federal to the US government and Cornell University, no one is immune to humiliating security glitches

A bad anti-virus update – the notorious DAT 5958 - from McAfee in 2010 caused system shutdowns for countless customers who sometimes struggled with a fix for days. Dave DeWalt, president and CEO of McAfee, apologized, saying, “We deeply regret the impact this had on you. In some cases, the outages were lengthy.”

Credit: Mike Segar / Reuters

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