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Our results show that Amazon and third parties (including advertising and tracking services) collect smart speaker interaction data; where Amazon shares it with as many as 41 advertising partners. We find that Amazon processes voice data to infer user interests and uses it to serve targeted ads on-platform (Echo devices) as well as off-platform (web). Smart speaker interaction leads to as much as 30X higher ad bids from advertisers. Finally, we find that Amazon's and skills' operational practices are often inconsistent with their privacy policies