Enlarge / An Amazon Echo, specifically its top control buttons for volume, mic off, and Alexa action. (credit: Valentina Palladino) Smart-assistant devices have had their share of privacy missteps, but they're generally considered safe enough for most people. New research into vulnerabilities in Amazon's Alexa platform, though, highlights the importance of thinking about the personal data your smart assistant stores about you—and minimizing it as much as you can. Findings published on Thursday by the security firm Check Point reveal that Alexa's Web services had bugs that a hacker could have exploited to grab a target's entire voice history, meaning their recorded audio interactions with Alexa.