Some tips from entrepreneur Alex Miller for other ways to protect your Zoom calls include:

Anyone publicly sharing Zoom links where they could be discovered by trolls, like on Twitter:

• Be sure to change screensharing to “Host Only” before a call starts or as soon as they see the feature being abused.
• Disable “Join Before Host” so people can’t cause trouble before you arrive.
• Enabling “Co-Host” so you can assign others to help moderate.
• Disable “File Transfer” so there’s no digital virus sharing.
• Disable “Allow Removed Participants to Rejoin” so booted attendees can’t slip back in.