A technology called static source code checkers was so helpful in eliminating Windows bugs that Microsoft bought the company. When Microsoft needed help in taming the large number of flaws that had crept into its Windows operating system, it looked to technology known as "static source code checkers" and a company called Intrinsa. Intrinsa's product, known as PREfix, analysed the code created by developers and flagged potential errors. The software giant found the program so helpful that it bought the company for $60m (£32.9m) in 1999. Today, a handful of other developers of similar products hope to convince customers that they should be using their programs to spot-check security.
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