There has been many incidents in recent years similar to this.
Over the weekend, news outlets reported that a New Zealand man named Andrew Barker had found a camera, hidden in a smoke detector, in his Airbnb that was livestreaming a feed of the living room. Barker was in Cork, Ireland, on a 14-month trip around Europe with his family when they checked into the rental house. Once they unpacked, Barker, who works in IT security, conducted a scan of the Wi-Fi network and found a camera the owner had not mentioned. He was then able to connect to the camera and view the live feed.