Samsung smart TVs may continue sending tracking-related data even after users turn off the tracking option, according to a new study by researchers at Northeastern University.
The findings raise concerns about how smart TVs collect and use viewers’ information.
Smart TVs use a technology, Automatic Content Recognition, to identify what people watch. It can detect content from cable TV, gaming consoles, antennas, and streaming apps. Companies may use this information to understand viewing habits and show targeted advertisements.
Researchers tested 12 TVs from 10 brands. They found that Samsung and Vizio TVs continued sending internet traffic linked to tracking after ACR was disabled. However, the traffic was encrypted, so researchers could not confirm exactly what information was being sent.
The study also uncovered a privacy problem with VIDAA OS. Researchers found a publicly accessible server containing more than 57 million viewing records linked to over one million TVs. The data was not encrypted, meaning others could potentially access viewing information. The server was later secured with a login, but the data was still being sent without encryption.
Viewing history can reveal people’s interests, daily habits, and sensitive personal information. If exposed, this data could create serious privacy risks.
To protect your privacy, turn off tracking in your TV’s settings, disconnect your TV from the internet, or use an external streaming device. You can also use the researchers’ blocklist to block known tracking servers.