There have been reports of a practice called “Zoom Bombing”, where an uninvited – and often devious – guest shows up to a Zoom session and posts inappropriate content in the chat window or on video.
If you are concerned about the security and privacy of your meetings, follow this guidance. You can configure many of the settings as defaults for all of your meetings. Log in at vassar.zoom.us and select Settings to make these your defaults.
Zoom also provides guidance at the following blog posts:
https://blog.zoom.us/wordpress/2020/03/20/keep-the-party-crashers-from-crashing-your-zoom-event/
https://blog.zoom.us/wordpress/2020/03/27/best-practices-for-securing-your-virtual-classroom/