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Did you know that wireless devices almost always present a security vulnerability?  Wireless signals pass through the air and can be intercepted and read by a savvy attacker.  To protect wireless communication sessions, usually the wireless link is protected with some form of encryption.  Last week I was teaching a CISSP class, and we were discussing the security vulnerabilities inherent in wireless networking, when one of the students asked if wireless keyboards are secure.  The research I did while answering ...