LG Smart TVs Record Audio in Standby Mode and Scan Home Networks for Advertising Data

Researchers from the Gamers Nexus YouTube channel analyzed multiple LG OLED television models, including the LG G5 series, and discovered that the devices continue to capture audio through built-in microphones even when the screen is off and the television is in standby. The TVs scan local networks to identify smartphones and smartwatches, collect internal IP addresses, available Wi-Fi network names, and location data. When internet connectivity is removed, audio recordings are stored locally and transmitted once the connection is restored. The devices also employ Automatic Content Recognition (ACR) technology to generate digital fingerprints of viewed content, with the resulting data reportedly sent to LG Ad Solutions for targeted advertising. Additional vulnerabilities were identified in webOS that could potentially allow remote code execution. LG has not yet commented on the findings, and experts recommend disconnecting the televisions from the internet and using external streaming devices until official clarification is provided.

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Smart televisions manufactured by LG have been found capable of recording audio while in standby mode, scanning local networks, and collecting detailed information about nearby devices, according to an investigation by the Gamers Nexus YouTube channel.

Analysis of several production LG G5 OLED models revealed that the built-in microphones captured intelligible sound even when the screen was powered off. When the television was disconnected from the internet, recordings were stored locally on the device and automatically transmitted once connectivity was restored.

The televisions actively searched the home network for smartphones and smartwatches, collected internal IP addresses, recorded names of available Wi-Fi networks, and gathered location-related information. In addition, the devices utilized Automatic Content Recognition (ACR) technology to create digital fingerprints of movies, television programs, and other video content viewed by users.

Collected data is reported to flow to the advertising division LG Ad Solutions and may be used for targeted advertising purposes. Researchers also identified vulnerabilities in the webOS platform that could potentially enable remote code execution, although details on patches remain unavailable.

LG has not commented on the findings at the time of publication. Security experts recommend disconnecting LG smart televisions from the internet and relying on external streaming devices until official clarification is issued.

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