Are these voice-activated digital assistants security systems or privacy risks?

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People used to dream about having a robotic assistant to obey their every command, and now, thanks to the Amazon Echo, the future has arrived. But with privacy concerns becoming an ever-growing issue in our tech-heavy world, is having a digital assistant secure? Below are four ways that the Amazon Echo and its obedient voice, Alexa, pose threats to your privacy. 
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Source: Electronic Products
By Jean-Jacques DeLisle, contributing writer