LG OLED TVs Scan Home Networks and Record Audio in Standby

LG OLED TVs, including the flagship G5 model, have been found scanning local home networks for unrelated devices and recording audio while the screen is off. A technical investigation conducted by Gamers Nexus, Level1Techs, and independent researchers reveals that these devices capture ambient sound and map hardware across the user's local area network (LAN).

According to the findings, the televisions actively scan the LAN to identify and map unrelated hardware, such as smartphones and smartwatches. More critically, the investigation found that microphone audio is captured and transcribed into plain-text logs locally while the screen is powered down or in standby mode. These cached logs are then uploaded to LG's infrastructure once internet connectivity is restored, creating a delayed exfiltration pipeline for audio data captured in private settings.

The Data Pipeline

This behavior occurs within the broader ecosystem of LG's data collection. LG Ad Solutions operates an Automatic Content Recognition (ACR) program designed to provide viewing data to advertisers. While ACR typically focuses on what is being watched on screen, this investigation suggests the data pipeline extends further into the physical environment. The researchers highlighted that this capability poses a particular risk for those using LG displays as passive HDMI monitors in sensitive environments, such as corporate boardrooms or hospitals, where confidentiality is mandatory.

Breach of Trust

These findings stand in direct contradiction to the company's own public assertions. LG has previously stated publicly that its televisions “do not collect, record, or store ambient conversations,” according to Cybersecurity News. The ability of a consumer electronic device to transcribe audio in standby mode and upload it later represents a significant breach of consumer trust and suggests a persistent surveillance risk in the home.

Industry Implications

The discovery underscores a growing tension between the "smart" functionality of home appliances and the fundamental right to privacy. When devices operate in standby mode, users generally assume they are inactive; however, this investigation proves that the hardware remains capable of active surveillance. This creates potential legal vulnerabilities for the manufacturer regarding privacy promises and the transparency of their data collection practices.

What's Next

It remains to be seen how LG will respond to these specific technical findings or if the company will issue a firmware update to disable these background processes. Observers are now watching to see if regulators will launch formal inquiries into whether these practices violate consumer protection laws or previous agreements regarding tracking and data privacy.