The researchers found two possible hacking scenarios that allow a hacker to phish for sensitive information and eavesdrop on users.
The annual shipments also reached a record level in 2019 at 147 million units.
Apps approved by Amazon and Google for their voice-controlled smart devices could allow spying on users, according to a security report.
The smart speaker voice apps called Skills for Alexa and Actions on Google Home contain vulnerabilities that can be abused to listen in on users or voice-phish their passwords, Security Research Labs (SRLabs) notes in its official blog.
The researchers found two possible hacking scenarios that allow a hacker to phish for sensitive information and eavesdrop on users, turning the assistants into 'Smart Spies'. The security loopholes have been disclosed to Amazon and Google.
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