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Using the app Zoom - Keeping Safe

If you are using Zoom to communicate in these hard times, please be aware that there are some ways in which your chat can be hacked by others. It’s called, ‘Zoom Bombing’.


The problem stems from Zoom’s policy that

“The host does not need to grant screen share access for another participant to share their screen.”


However, hosts can disable this option in their settings or the Admin controls of a call. You can either change this in your pre-meeting Settings or in the in-call admin settings for Share Screen -> Advanced Sharing Settings.


Anyone publicly sharing Zoom links where they could be discovered by trolls, like on Twitter, should be sure to change screensharing to “Host Only” before a call starts or as soon as they see the feature being abused. Other ways to protect your Zoom calls include:

  • 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.