Comcast has warned some of its high-speed Internet subscribers in Utah and other markets that their computers and other devices may be infected by malware. Instead of using the subscribers ' e-mails, the company sent them letters via the U.S. Postal Service. "One or more of the devices connected to your network are infected with malware, " the MSO wrote in one of the letters sent to a Utah subscriber. "This allows the cyber criminal to redirect your computer and other devices ...

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