Your LG Smart TV Has Been Scanning Your Home Network, and That Is a Problem

If you have an LG smart TV connected to your home Wi-Fi, it may have been quietly cataloguing 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 is the kind of detail that deserves a lot more attention than it is getting.

The behaviour in question involves LG TVs actively scanning the LAN, which is the local network inside your home, for third-party devices. This is not the TV communicating with LG's servers, which is already something many people have concerns about. This is the TV probing your internal network to identify what else is connected to your router. Phones, tablets, smart home devices, computers. All of it, potentially being logged by the television on your wall.

Why Is a TV Doing This?

The most charitable explanation is that LG is trying to enable features like automatic content recognition or seamless connectivity between devices, such as playing audio through a connected speaker or mirroring content from a phone. These are features LG would describe as convenient. The less charitable explanation is that detailed knowledge of a household's device ecosystem has real commercial value, and LG, like every other smart TV manufacturer, operates an advertising and data business alongside its hardware business.

LG's WebOS platform 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 detailed picture of that household's income bracket, tech sophistication, and purchasing habits. That data is worth money.

What makes this particularly uncomfortable is the offline angle. Reports suggest the scanning behaviour occurs even when certain smart features appear to be switched off, meaning users who thought they had opted out of some data collection may not have actually done so. Tracking activity while offline or while features appear disabled is a significant trust violation, and depending on jurisdiction, it may cross legal lines too.

In the UK and EU, this kind of covert device discovery on a user's local network sits in complicated territory under GDPR. The key question is whether LG is processing data that counts as personal data under the regulation, and whether meaningful consent was actually obtained during the TV's setup process. A buried toggle in a settings menu that most people never find does not constitute informed consent.

What Can You Actually Do?

The most effective options are also the most inconvenient. You can put your smart TV on a separate guest network, isolated from your other devices, which prevents it from seeing anything else on your home network. You can use a router with robust firewall controls to block the TV from making outbound connections. Or, if you primarily use the TV as a display, you can connect a streaming stick like a Roku or Apple TV and leave the built-in smart platform unused.

None of these solutions are what a normal consumer should be expected to do just to watch television safely, and that is the real issue. Smart TVs have become surveillance devices that happen to show content, and the industry has faced very little meaningful consequence for this. LG is far from alone here. Samsung, Vizio, and others have faced similar criticisms over the years.

What is different now is that the scanning is happening at the network level, rather than just the content level. It is not just watching what you watch. It is watching what you own.

LG has not issued a formal statement at the time of writing. Regulators in the EU and UK should be paying very close attention.