Hardening an LG webOS TV with root against microphones and telemetry

What happened and what to do

The public repository on GitHub documents a privacy hardening procedure for an LG smart TV running webOS with root access. According to its description, the project disables the microphones and the voice processing pipeline of the remote control, blocks advertising, telemetry and automatic content recognition (ACR) endpoints, and hides advertising apps. The description presents it as a concrete example of hardening an operating system for smart TVs.

For companies, the case shows a recurring problem: equipment used in offices or reception areas, such as meeting rooms and lobbies, may send audio, usage and display data to vendors without the customer's control. A practical response starts with an inventory of connected devices and their network destinations, followed by DNS and outbound traffic monitoring to identify telemetry and ACR. Based on that, it is possible to define network segmentation policies, blocking at firewall or DNS level, and restrictions on microphones, always weighing the impact on warranty and device functions.

How the consultancy can help

Assessment of the exposure of smart TVs and other connected devices on your network: inventory, analysis of traffic and telemetry destinations, and a proposal for segmentation and blocking. Scoped implementation of monitoring and control rules in your own environment, with ongoing operation when needed.

Next step

If your company uses smart TVs or other devices with microphones in meeting rooms and service areas, send a brief description of your environment, the number of devices and your privacy requirements. Wendelmaques will return a scoped proposal.