To err is human, but to foul things up completely takes a computer, or so the old saw goes. Although this may seem a little unfair to computers, a group of cyber-security experts led by Jim Blythe of the University of Southern California are counting on there being at least some truth in the saying. They have created a system for testing computer-security networks by making computers themselves simulate the sorts of human error that leave networks vulnerable.Mistakes by users are estimated to be responsible for as many as 60% of breaches of computer security. Repeated warnings about being vigilant, for example, often go unheeded as people fail to recognise the dangers of seemingly innocuous actions such as downloading files.
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