Google: 'We all have to invent the wheel'

Douglas Merrill first learned about online security while growing up in Arkansas. A natural geek, he spent Saturdays putting together computers with his dad, a physics professor. As vice president of engineering at Google, Merrill stands at the forefront of a critical period in the Digital Age as so-called Web 2.0 technologies pose unprecedented challenges to online security.

Next to several cubicles that house other security experts stands a mannequin in full Darth Vader garb. Crew members joke that he's the "friendly face" of Google security.

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