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As reported by the Financial Times, researchers from Northeastern University and Imperial College London found several smart TVs, including those from popular brands Samsung and LG, as well as streaming dongles Roku and FireTV were sending data such as location and IP address to Netflix and third-party advertisers. Other smart devices that include speakers and cameras were sending users' data to “dozens of third parties,” including Microsoft and Spotify.
A separate smart TV study by Princeton University found that some Roku and FireTV apps were sending specific user identifiers to third parties, including Google.
The Northeastern University study, which was conducted on 81 different devices in both the US and UK, found “notable cases of information exposure,” with Amazon, Google, Akami, and Microsoft the most frequently contacted companies. Researchers did point out, however, that this is partly because these companies provide cloud and networking services for smart devices.
The team said third parties receive data such as device information, user locations, and possibly even when people are interacting with their TV. “So they might know when you’re home and when you’re not,” said Professor David Choffnes, a computer scientist at Northeastern University and one of the paper’s authors.
The companies named in the report have defended the practices. Netflix said the information it receives from TVs that are not signed in to its service is confined to how the app appears and performs on screen.
Google said that “depending on the device manufacturer or the app owner, data sent to Google could include user location, device type and what the user is watching within a specific app so they can be targeted with personalized advertising.”
Another report from last year showed that five of the top-selling brands of smart televisions tracked users’ viewing habits, even when they were not streaming.