Zoom Bombing occurs when unwanted outsiders join and disrupt an open Zoom meeting, such as by taking over the screen and showing obnoxious videos or photos. There have been several high-profile (and unpleasant) instances recently. See: https://www.nytimes.com/2020/03/20/style/zoombombing-zoom-trolling.html

To protect open Still Water meetings (when the Zoom link is posted on our website) the following changes have been made to Setting.

Only host can Screen Share (Though the host can change this option during a meeting).

File Transfer has been turned off.

If a disruption occurs, the host has several good options, such as:

Remove disruptive participants: From that Participants menu, you can mouse over a participant’s name, and several options will appear, including Remove. Click that to remove someone from the  meeting.

Put every one on hold: All participants except the host will have their video and audio connections momentarily disabled . “Click on someone’s video thumbnail and select Start Attendee On Hold to activate this feature. Click Take Off Hold in the Participants list when you’re ready to have them back.”

More information about Zoom bombing is in this Zoom Help Center post: https://blog.zoom.us/wordpress/2020/03/20/keep-the-party-crashers-from-crashing-your-zoom-event/

The Anti-Defamation League also provided a helpful discussion of How to Prevent “Zoombombing”.