Your best option is to find an alternative to Zoom:
https://appleinsider.com/articles/20/04/02/zoom-freezing-development-to-fix-security-privacy-flaws
Remember we have a lot of kids out of school who are sitting at home bored. They love doing this kind of stuff. It's like when I was growing up and we used to sit around making prank phone calls. This was before caller ID and all that other technology. So there was a time when you could prank call people from your home all day long and never get caught.
This is akin to home wi-fi networks. It used to be you could get by without having it password protected, but now ... not recommended.
We’re using EventBrite to somehow limit who gains access to the Zoom session.
Bkmrk
Thank you for posting this article. We are using Zoom for church services for those who cannot make it. I am going in and fixing the settings right now.