I live in a block of flats and have just installed one. Set to motion record. Not linked to any 3rd party sites.
The flat has code/key access however we have had numerous issues with postal theft, drug dealing around the blocks and very recently; package theft.
Just because blocks have private access doesn't mean it's a vault of security.
Our HA is notorious in either claiming outside CCTV isn't working or costs too much to get access (what's the point?!). There is no CCTV inside.
I have installed the Ring Peephole version on my door after packages have been stolen where couriers have gained access with ringing other flats before mine, dropped the parcel off outside my door, taken their photo and left.
Normally this is fine as mostly, I get to my package - however recently between getting the courier update alert and getting home - packages have gone.
If I saw a neighbour with a security camera that also covered my door, i'd be delighted - FREE SECURITY!
I have nothing to hide. They're not going to be interested in anything I do because heading out of my door and back in isn't interesting.
Just like when you're in a shop, on the street, on a train/bus... you're on CCTV.