LG Smart TV Found Scanning Local Networks for Device Data
A security demonstration has highlighted how some LG smart TVs continuously scan local area networks for connected devices, a behavior that can persist even when the television appears to be powered down or in standby mode.
The research, covered by Ars Technica, showed the television probing the network for phones, tablets, and other devices, logging identifiers and metadata in the process. This network scanning capability appears to be built into the TV's firmware and operates independently of whether the device is actively being used.
The finding underscores an ongoing tension in the connected home device market: hardware manufacturers often embed network-level data collection features into devices that consumers may not expect to have persistent monitoring capabilities. Such scanning can in principle allow a device to build a profile of other electronics in a household over time.
Privacy advocates have long warned that "always-on" connectivity features in consumer electronics can create unexpected data exposure. In this case, the TV's local network activity means it can observe and log device information without any internet connection, making the behavior harder for users to detect or audit.
For consumers concerned about these capabilities, best practices include isolating smart TVs on a separate network segment, disabling network features when not needed, and reviewing device permissions and data-sharing settings in the TV's menu.