A Redditor reported that, after connecting his Xiaomi Mijia security camera to Google Nest Hub, his security feed started showing random images from other peoples' houses. Google swiftly disabled Xiaomi Nest Hub integrations after finding out.
https://www.notebookcheck.net/Xiaomi-Mijia-connected-to-Nest-Hub-seemingly-streams-footage-from-random-peoples-houses-to-other-Nest-users.449012.0.html