Your vacuum knows your floor plan and when you are home, so spend five minutes in its app turning off remote viewing and any cloud-only features you don’t use. Of course, this depends on the robot vacuum manufacturer and what controls their app offers. And, once again, you agree to the Terms and Conditions and Privacy Policies (but who reads those, right?).
I have a robot vacuum, but its battery is dead, and we no longer use it. My wife and I vacuum manually, so there are no privacy concerns here. It’s a “local-only” type of implementation. But I have thought about this issue for quite some time. I always thought that it would be a perfect spy device. Hacking it would let a “bad actor” know everything about your home: the layout, activities, people, and items, among other things.
So be careful about what you really want. Does having your full home layout and activities stored on a remote server somewhere overseas bother you? If not, fire up that robot vacuum. If it does, get some exercise and vacuum manually yourself. Regardless, give the article a read.