The National Security Agency built a version of Linux with more security tools that its technologists believe could help make the country's computing infrastructure less vulnerable. They won over the Linux developer community with the changes. But its success depends on the adoption by U.S. companies and government agencies, something that remains very much in doubt.

For more than a decade, the NSA has worked on a way to use a computer's operating-systems to control where software applications and their users can access data within IT environments.

By Larry Greenemeier at InformationWeek.

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