By Jeremy Hsu on September 24, 2024
Popular smart TV models made by Samsung and LG can take multiple snapshots of what you are watching every second – even when they are being used as external displays for your laptop or video game console.
Smart TV manufacturers use these frequent screenshots, as well as audio recordings, in their automatic content recognition systems, which track viewing habits in order to target people with specific advertising. But researchers showed this tracking by some of the world’s most popular smart TV brands – Samsung TVs can take screenshots every 500 milliseconds and LG TVs every 10 milliseconds – can occur when people least expect it.
“When a user connects their laptop via HDMI just to browse stuff on their laptop on a bigger screen by using the TV as a ‘dumb’ display, they are unsuspecting of their activity being screenshotted,” says Yash Vekaria at the University of California, Davis. Samsung and LG did not respond to a request for comment.
Vekaria and his colleagues connected smart TVs from Samsung and LG to their own computer server. Their server, which was equipped with software for analysing network traffic, acted as a middleman to see what visual snapshots or audio data the TVs were uploading.
They found the smart TVs did not appear to upload any screenshots or audio data when streaming from Netflix or other third-party apps, mirroring YouTube content streamed on a separate phone or laptop or when sitting idle. But the smart TVs did upload snapshots when showing broadcasts from the TV antenna or content from an HDMI-connected device.
The researchers also discovered country-specific differences when users streamed the free ad-supported TV channel provided by Samsung or LG platforms. Such user activities were uploaded when the TV was operating in the US but not in the UK.
By recording user activity even when it’s coming from connected laptops, smart TVs might capture sensitive data, says Vekaria. For example, it might record if people are browsing for baby products or other personal items.
Customers can opt out of such tracking for Samsung and LG TVs. But the process requires customers to either enable or disable between six and 11 different options in the TV settings.
“This is the sort of privacy-intrusive technology that should require people to opt into sharing their data with clear language explaining exactly what they’re agreeing to, not baked into initial setup agreements that people tend to speed through,” says Thorin Klosowski at the Electronic Frontier Foundation, a digital privacy non-profit based in California.
Just don’t hook it up to your wifi. Don’t use any of its included apps. If you must stream get a separate device to do it.
It still can connect to untrusted wifi access point (without password protection). So also try to go to: Settings Menu -> General & Privacy -> Terms & Privacy -> And there is a whole list of privacy setting. Try to find the option to: Do not agree with all. Or you need to manually disallow each privacy option… Good luck!
Question, what separate device is best and most privacy focused? I just imagine getting a firestick, google Chromecast, etc would also give away data?
There are some open-source systems for media PCs.
Kodi seems to me to be popular, though I don’t use a media PC myself.
You’ll need to have the technical knowledge to install it yourself.
Again your media PC (or HTPC) is still connected to a smart TV. And the problem is with the TV recording HDMI data. In fact, if you read correctly, the Smart TV does no record data from the built-in apps like Netflix.
Sometimes it requires Wi-Fi for setup. In that case, change the Wi-Fi password after you set it up.
I have a Samsung smart TV that is not connected to any networks, and every few days it will display a ‘detecting device’ loading screen when switching to my input that fails after 30 seconds or until I cancel it (canceling does not seem to impact its functioning)
I have no evidence but I strongly suspect this to be related to attempting to record and send device data to a remote server.
I have noticed this too, I have to press the ‘back’ button on the remote to get the computer output.
This is the correct answer. I actually disabled LG’s version of it when I first heard about it. A few months later it had been reactivated in an update, so I just factory reset it and connected an old laptop.
You can’t trust anyone — corporation or government — to protect or respect your privacy. Ever. If it’s not open source and E2EE, assume that a criminal is going to view and process it for profit.
No it is not the correct answer! The correct answer is to put the CEOs who perpetrate this criminal shit in prison for millions of counts of hacking and stalking!
Merely shrugging and implementing a technological workaround is not an appropriate response to someone perpetrating a felony against you!
The downvotes are because your “solution” is not based in the reality that the rest of us live in.
There are no downvotes, so I’m not sure what point you think you’re making.
Okay… Though I agree the system is run by criminals, I’m gonna continue protecting my data as best I can, and recommending everyone do the same, while you live in a magical fantasy land where we don’t live in capitalist plutocracies and the rule of law applies to everyone, equally!