The U.S. National Security Agency has reportedly developed technology to commandeer computers even when they are off the Internet, and security experts warn it's only a matter of time before similar tools become part of cybercriminals' toolbox.

Since 2008, the NSA has used radio technology to send and receive data to compromise nearly 100,000 systems in a number of overseas targets, the New York Times reported Wednesday. While based on technology that has been around for decades, the level of sophistication of the tools developed by the NSA is impressive, experts say.

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