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.
Imagine the amount of bandwidth and energy saved, if they didn’t do any of this bullshit.
They are essentially using someone else’s money to get themselves more money. Fuck these people!
LOL “if it was opt-in, no one would do it!”
no fucking shit. there is nothing worth watching that i would buy a smart tv for
One issue that has come up recently in discussions on here is that it’s hard to get dumb TVs or computer monitors in large format in 2024.
Not impossible, but surprisingly difficult. I went looking for a large computer monitor for some user who wanted a large one. I eventually found an older one on Amazon still for sale, but it’s not that easy to get large computer monitors, which I think is part of what drives people to use smart TVs as computer monitors.
You can get projectors, but that’s not what everyone’s after.
A smart tv without an internet connection is usually close enough to a dumb TV. It’s not like your TV needs regular security updates so leaving it off your home network is fine.
I do not know how true it is, but I’ve heard that some of them will create a mesh network if your neighbor has the same brand and it’s connected to the internet.
I’ve always meant to look into it but I have big dumb TVs that work for now.
Would love to know how true this is as I wouldn’t put it past manufacturers
There’s another reply further down that goes into specifics. I ain’t the one because I didn’t come with receipts and I’m just a drunk.
It’s called wardriving, a practise Samsung TVs are infamous for.
To me, Wardriving is back in the day when you used to drive around town with a laptop and a program that catalogues all the open wifi networks in range.
I never put that together with wardriving but that’s exactly what it is. Thank you for that.
Unrelated story: ~20 years ago I was in the military and broke as hell. I went wardriving in my neighborhood looking for open wifi and found a business not too far away that had it. So I built an antenna out of a coffee can, mounted it up just outside my window, and got free wifi for months.
I will not give them the satisfaction.
Smart TVs are only smart when they are connected to the internet.
As mentioned by others, they sometimes network with nearby devices such as your neigbor’s TV or an unsecured wifi.
if it was opt-in, no one would do it!
Which should be telling them that not only does no one want it, but maybe just maybe we already paid for your fucking TV. Either raise the price or stop being so fucking goddamn greedy to the point that you force us to make the government force you to stop.
Of course the bought and paid for US government won’t, but hopefully EU governments will.
If they raise the price, then they only get money once. If they sell your data, now they have an income stream.
THIS is piracy. Along with all the other personal data selling.
These are criminal violations of the Computer Fraud and Abuse Act. Jail the motherfucking felon CEOs!
So LG and Samsung likely have tons of illegal (copyright) content on their servers then? Ownership is 9/10ths of the law so they say. That’s gotta be exabytes
Most likely yes… And other privacy sensitive information like banking details, passwords and more.
Well, then you should sue them.
For example, it might record if people are browsing for baby products or other personal items.
Don’t mind baby products and dildos or whatever.
They could see bank activity and even login credentials when someone is temporarily displaying their own passwords.
This basically ignores all security measures regarding everything. Sensitive communication, company secrets and so on.
That’s fucking seriously huge. What the fuck?!
Right? But we’ve been convinced the Chinese government spying on us through Huawei is a problem.
Every major tech major brands and business, even cars like BMW and now also TVs like Samsung or LG are all spying on their customers. And why isn’t this forbidden by lawn already?
even if it was forbidden by lawn, most people with smart TVs keep them inside the house.
And why isn’t this forbidden by lawn already?
Money & Corruption, the movie.
They are. They just aren’t the only one.
And what are we doing about the others?
They’re both problems.
Yes but one is treated differently
Because that’s a chinese corporation making money.
It’s fine when a US one does it
Samsung and LG are both South Korean.
I know right!?? I connected my htpc to my Samsung tv. Omg!
But it’s not sending images. It’s content recognition, so it can tell you’re on a bank site but not decipher your password if it showed briefly
.
Like content recognition can’t recognize text, if that’s what it’s been configured to look for?
awful ethics aside what a disgusting waste of processing power. software already barely runs
now you know why
Screenshotting every 500ms is insane.
TVs I’ve come across are such displeasure to use, it’s incredible
Would be nice if we could have some technological privacy laws written in this century.
We need all the boomers in Capitol Senior Care Home to vacate first
You have it backwards. You have to EVICT them.
Until then just desolder the antennas good luck sending data with no way to connect to the internet.
Actual paper here.
https://arxiv.org/html/2409.06203v1
It is not sending full screenshots as anybody technical would already have guessed. It’s a few KB over an hour, so it’s content recognition hashes.
Opt out anyway. Their study shows the opt out option does indeed opt you out of it.
Not if you never connect your smart TV to the internet to complete the setup and instead use it as a dumb display (I hope)
No wonder these things operate slow as shit!
Theoretically I could display highly illegal stuff and they would distribute it making them complicit?
Can the API be hacked to flood their servers with petabytes of cat pictures?
What is happening with the data? Where are the data savers?
They collect all this data and then still cancel the most watched/best shows.
Morons.
You hear that? It’s a whisper… It’s a multinational multibillion dollar class action lawsuit coming after Samsung and LG. WTF!
So they are allowed to pirate content actually? Even if it’s not Netflix or YouTube they take screenshots of potentially copyrighted content
Don’t let your TV connect to the internet. I have mine on my wifi so I can control them using Home Assistant, but they’re on an isolated VLAN with no internet access.
Edit: Of course, this only works if you use an external box for streaming, like an Nvidia Shield, Apple TV, Google Chromecast TV or whatever they call it now, etc.
