A recent study of Internet browsers worldwide discovered that over half – 52% – of Internet Explorer users weren't using the current version of the software. For other browsers the numbers were better, but not much: 17% of Firefox users, 35% of Safari users, and 44% of Opera users were using an old version.

Security professionals are quick to blame users who don't use the latest update and install every patch. "Keeping up is critical for security," they say, and "if someone doesn't update their system, it's their own fault that they get hacked." This sounds a lot like blaming the victim: "He should have known not to walk down that deserted street; it's his own fault he was mugged." Of course the victim could have –and quite possibly should have – taken further precautions, but the real blame lies elsewhere.

The Guardian - Bruce Schneier July 17, 2008