Hackers show how insecure Alexa/Google Home are, create apps to listen for passwords

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Whitehat hackers at Germany's Security Research Labs developed eight apps—four Alexa "skills" and four Google Home "actions"—that all passed Amazon or Google security-vetting processes. The skills or actions posed as simple apps for checking horoscopes, with the exception of one, which masqueraded as a random-number generator. Behind the scenes, these "smart spies," as the researchers call them, surreptitiously eavesdropped on users and phished for their passwords.

...The eavesdropping apps responded with the requested information while the phishing apps gave a fake error message. Then the apps gave the impression they were no longer running when they, in fact, silently waited for the next phase of the attack.

As the following two videos show, the eavesdropping apps gave the expected responses and then went silent. In one case, an app went silent because the task was completed, and, in another instance, an app went silent because the user gave the command "stop," which Alexa uses to terminate apps. But the apps quietly logged all conversations within earshot of the device and sent a copy to a developer-designated server.

...SRLabs privately reported the results of its research to Amazon and Google. In response, both companies removed the apps and said they are changing their approval processes to prevent skills and actions from having similar capabilities in the future.

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