Security software doesn't do a good job of detecting employees who may have a grudge against their companies. And often, those unhappy individuals are motivated by deep-seated human emotions: jealously, greed or desire for power, said Bob Ayers, an associated fellow at think tank Chatham House's Information Security Program.

Take, for example, the case of a loathed senior executive of a major European bank. In preparation for a new post, his computer was sent to the IT department, where a security officer said it contained child pornography, Ayers said.

At Computerworld.

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