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Message from the Office of eLearning about preventing and eliminating disruptive Zoom attendees


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March 27, 2020

The University of Dayton IT team has configured Zoom's privacy and security settings to reduce the possibility of unwelcome guests (rascals) from joining your online class session. Some refer to this as "Zoom-bombing."

How Rascals Might Disrupt Your Class

Unfortunately, your students have ways of sharing information that allows unwelcome rascals to connect and create disruptions. The measures explained in this document will increase the integrity of your Zoom sessions, reduce the chances of unwanted attendees, and equip you to quickly deal with the rascals.

There are three things to know about how a rascal can disrupt your Zoom class session.

  1. Any rascal provided with the link to your class meeting can join.
  2. A rascal can produce disruptive audio or camera views.
  3. A rascal can share disruptive content.

You can see illustrations of the instructions below here.

Preventing Rascals from Gaining Access to your Zoom Session 

Use Isidore - By using the Zoom Meetings tool in Isidore it is more difficult for students to share the link to your class session with rascals. The less secure alternative is to email the direct link to your roster.

Disable Join Before Host - This prevents anyone from joining your class until you have joined yourself. These options can be found when scheduling your meeting.

Use the Waiting Room and only admit identifiable students - This isn't bullet-proof because a rascal could use the name of one of your students, but it gives you a chance to only allow names you trust to be admitted from the waiting room.

Kick a Rascal out of the session - In the Manage Participants panel, click More beside the attendees name, and then click Remove. And if they try to get back in they should get stuck in your Waiting Room.

Stop Disruptive Audio or Camera Views

Mute Participants - You can mute one attendee or the whole room. These options are presented in the Management Participants panel. Click More to disallow them from unmuting themselves.

Stop a Participants Video - The easiest way to stop a rascal’s video is to find their video in the grid of cameras, click the three dots to access the options, and then click Stop Video

Mute Participants on Entry - This can be done using the same options described in the previous Mute Participants section, but it’s best to set this option when scheduling your meeting.

Disable Screen Sharing for Participants

Rascals might try to hijack your session. They cannot take control of what is being shared while you are sharing a screen or an application, but if you are just talking on camera, they can take over what is being shown to your class. Here’s how to counter this before it happens.

You can disable sharing for participants during a meeting by clicking the arrow next to Share Screen. Choose Advanced Sharing Options, and choose Only Host for Who Can share?. If you want a student to share or present, you will have to make them a co-host.

For additional assistance with Zoom, including advice on best practices, please contact the Office of eLearning at or 937-229-5039.

You may also refer to eLearning's Zoom documentation or Zoom's help documentation.