Cover Image: August 1999 Scientific American Magazine See Inside

How To Steal Millions in Chump Change [Preview]

By Paul Wallich















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It used to be a joke: a computer can make a mistake in a fraction of a second that would take an army of mathematicians working with pencil

and paper 100 years to make. For 900,000 people whose credit cards apparently suffered fraudulent charges in a single computer-based scam, this


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