Can our cell phones, laptops rnand pagers ever really be secure? Or are our phonerncalls, the data on our hardrndrives, and the messages that we receive inevitably going to be an open book for any suitably motivated government spy—or teenaged hacker?rnCertainly, nothing can ever be 100 percent protected. Sadly, though, the makers of portable computing devices and wireless communications systems have led us down a false path by failing to make security a top priority. For more than a decade, cryptographers have possessed strong encryption techniques that could virtually guarantee that data falling into the wrong hands—through a stolen laptop, say, or an intercepted radio signal—would be impossible to decode. rnUnfortunately, these techniques have not made it from the lab into the mainstream.
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