Weird instagram accounts posting webcam footage
Ove the past month I've found seven different Instagram accounts that post hundreds or thousands of videos, and they all look like they're in the same building. They seem like webcam footage or something like that, and sometimes people are in the videos but they obviously don't know they're being recorded. Part of me is curious to find out more, but I want to know what can be done about it. I feel like it has to be illegal to post this stuff without permission, but I don't know what company or place these videos are from or what country it's in. So I came here to ask for help on what to do or for more info.
Here's the accounts that I've found, but there's probably more:
Like obviously these are automated accounts, they follow a few random accounts and post constantly, but why do they exist? Is it some malware posting this or what, I genuinely have no idea and want to know what can be done.