Your LG smart TV has been scanning your home network, and that is a problem
Key takeaways
- LG TVs have been found scanning local home networks to identify third-party devices including phones, laptops, and smart home gadgets
- The scanning behaviour reportedly continues even when smart features appear to be switched off
- LG's WebOS platform generates revenue from advertising and data, giving commercial motivation to gather detailed household device data
- Placing the TV on an isolated guest network is the most effective consumer countermeasure currently available
If you have an LG smart TV connected to your home Wi-Fi, it may have been quietly listing every other device on your network, including your phone, your laptop and anything else sitting on the same local area network. That is the finding surfacing from researchers and being reported by Ars Technica, and it deserves a lot more attention than it is getting.
The behaviour involves LG TVs actively scanning the LAN, the local network inside your home, for third-party devices. This is not the TV talking to LG's servers, which is already something many people worry about. This is the TV probing your internal network to identify what else is connected to your router: phones, tablets, smart home devices and computers.
What is the LG TV actually doing?
A local area network is the private space behind your router. Devices on it can normally see one another, which is how a phone can cast to a TV or a laptop can find a printer. Scanning that space means sending small probe messages to nearby addresses and noting which devices answer, and what they say about themselves.
Those answers can reveal a lot, and none of it requires any action from you. A device may announce its manufacturer, its model or the name its owner gave it. Put together, that gives a reasonably detailed inventory of a household's hardware.
Ars Technica reports that the scanning is aimed at third-party devices, meaning products that are not made by LG. That is what makes it notable. A TV that looks for a matching LG soundbar is doing something easy to explain. A TV that logs a visitor's phone is doing something else.
Why would a TV do this?
The most charitable explanation is that LG is trying to enable features such as automatic content recognition or seamless connectivity between devices, like playing audio through a connected speaker or mirroring content from a phone. LG would describe these as conveniences.
The less charitable explanation is that detailed knowledge of a household's device ecosystem has real commercial value. LG, like every other smart TV manufacturer, runs an advertising and data business alongside its hardware business.
LG's WebOS platform, the software that runs its TVs, generates significant revenue from advertising, content deals and data licensing. Knowing that a household contains three iPhones, a gaming console and a specific smart home hub paints a picture of its income bracket, tech sophistication and purchasing habits. That data is worth money.
Does it still happen when smart features are switched off?
This is the uncomfortable part. Reports suggest the scanning occurs even when certain smart features appear to be switched off. Users who believed they had opted out of some data collection may not actually have done so.
Tracking activity while offline, or while features appear disabled, is a serious breach of trust. Depending on jurisdiction, it may cross legal lines too.
The broader pattern is not new. We covered how Samsung joined LG in banning smart TV proxy apps, another sign that TV makers guard control of what runs on their platforms closely while giving owners little say over what the TV does on their own network.
How does GDPR apply?
In the UK and EU, covert device discovery on a user's local network sits in complicated territory under GDPR, the General Data Protection Regulation. The key questions are whether LG is processing data that counts as personal data, and whether meaningful consent was obtained during the TV's setup.
A buried toggle in a settings menu that most people never find does not amount to informed consent. Under the regulation, consent has to be specific, informed and freely given.
The penalties can be large. Regulators have used that power in recent cases, such as the Irish Data Protection Commission's €403 million fine on Google over location data and France's CNIL fining IQVIA 5 million euros over health data, according to the regulator.
LG has not issued a formal statement at the time of writing. Regulators in the EU and UK should be paying close attention.
What can you actually do about it?
The most effective options are also the most inconvenient. The table below compares them.
| Option | What it does | Main drawback |
|---|---|---|
| Guest network for the TV | Isolates the TV so it cannot see your other devices | Casting from your phone stops working unless you switch networks |
| Router firewall rules | Blocks the TV from making outbound connections | Needs a router with robust firewall controls and some know-how |
| Streaming stick (Roku or Apple TV) | Lets you leave the built-in smart platform unused | An extra device to buy, and the TV still sits on your network |
| Do nothing | No effort | The TV may keep logging your network |
Isolating the TV on a guest network is the most effective consumer countermeasure currently available, because the TV simply cannot see anything else to scan. Our guide to home network security settings for 2026 walks through router changes that make this sort of separation easier, and a modern router helps too. See our picks of the best Wi-Fi 7 routers in 2026 if yours is due for replacement.
None of this is what a normal consumer should be expected to do just to watch television safely, and that is the real issue.
Is LG the only one?
No. Samsung, Vizio and others have faced similar criticisms over the years. Smart TVs have become surveillance devices that happen to show content, and the industry has faced very little meaningful consequence for it.
What is different now is that the scanning happens at the network level, not just the content level. It is not just watching what you watch. It is watching what you own.
The difficulty is that none of this is visible. A scan takes a fraction of a second, leaves no on-screen notice and looks like ordinary network chatter. Without a router that logs traffic or a packet-capture tool, most owners would never know it had happened, which is why independent researchers matter so much here.
It also shows why a privacy policy is a poor substitute for design. If a TV can see every device on the network by default, the owner has to trust the manufacturer to behave. Isolation removes that need for trust, which is why it remains the strongest answer.
For buyers, the practical lesson is to treat any smart TV as an untrusted guest on your network. Disable what you can in the settings, keep the firmware updated, and keep the TV away from the devices that matter, such as work laptops and anything holding personal files.
