CES 2017: Security experts warn of lurking threats from smart devices

LAS VEGAS, NV - JANUARY 05: An Amazon Echo device is displayed at the Ford booth at CES 2017 at the Las Vegas Convention Center on January 5, 2017 in Las Vegas, Nevada. Ford is incorporating the voice operating device into its vehicles. CES, the world's largest annual consumer technology trade show, runs through January 8 and features 3,800 exhibitors showing off their latest products and services to more than 165,000 attendees. David Becker/Getty Images/AFP == FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY

Hey Siri, did you tell Alexa what we talked about last night? 

This is not sample conversation from the latest episode of The Bachelor. Within the "Internet of Things" that connects everything from our phones to our refrigerators, people talk to their devices to access a world of information and convenience. Your device listens when you talk to it – and when you don't.