1. Use a Unique ID for Large or Public Zoom Calls
2. Require a Meeting Password
3. Create a Waiting Room
4. Make Sure Only the Hosts Can Share Their Screen
There are some other good tips in there, too. As much as I hate to give this piece of malware the time of day, it appears to be the go-to service for schools trying to move their classes online, in an effort to salvage the year (west coast schools are unlikely to resume classroom instruction). A lot of teachers, like my sister, are getting a crash-course in technology. The kid's should probably be teaching them about online security!