The most important tip is to prohibit open access to the screen sharing feature during your meeting. You can disable this setting in your account profile:
- Log into your Zoom account
- Click the "Settings" tab on the left side of the screen
- Search for "Screen Sharing"
- Under "Who can share?" change the setting from "Participants" to "Host Only" (see screenshot below)
- Save your changes
And when hosting a public meeting, do not use your personal Zoom Meeting ID. Create a separate meeting event for any link you share publicly.