EC Tech Summary:

These are basic safety tips for protecting your Zoom meeting from what has been called Zoom Bombing, where uninvited attendees are disrupting meetings with inappropriate and offensive content. If you would like more information on what you can do to protect your meeting and online classes from Zoom Security, (CLICK HERE) to view the Zoom Bombing recommendations folder of the support portal.

If you experience a Zoom Bombing. Please click NEW TICKET in the upper right corner of this page to open a ticket.

Please try to include the following information:

- The words "Zoom Bombing" in the subject line

- The Room ID Number (9 or 10 digit number) in the body of the message

- The Date and time of the meeting

- Note the displayed name of the suspected offender

- Identify if the meeting was recorded

--- End of ECTech Summary ---

Message from Zoom

Lock your virtual classroom

Did you know you can lock a Zoom session that’s already started, so that no one else can join? It’s kind of like closing the classroom door after the bell. Give students a few minutes to file in and then click Participants at the bottom of your Zoom window. In the Participants pop-up, click the button that says Lock Meeting.

How to lock your classroom

Control screen sharing

To give instructors more control over what students are seeing and prevent them from sharing random content, Zoom recently updated the default screen-sharing settings for our education users. Sharing privileges are now set to “Host Only,” so teachers by default are the only ones who can share content in class.

However, if students need to share their work with the group, you can allow screen sharing in the host controls. Click the arrow next to Share Screen and then Advanced Sharing Options. Under “Who can share?” choose “Only Host” and close the window. You can also change the default sharing option to All Participants in your Zoom settings.

How to manage screen sharing

Enable the Waiting Room

The Waiting Room feature is one of the best ways to protect your Zoom virtual classroom and keep out those who aren’t supposed to be there.

When enabled, you have two options for who hits the Waiting Room before entering a class:

  1. All Participants will send everyone to the virtual waiting area, where you can admit them individually or all at once.
  2. Guest Participants Only allows known students to skip the Waiting Room and join but sends anyone not signed in/part of your school into the virtual waiting area.

The virtual Waiting Room can be enabled for every class (in your settings) or for individual classes at the scheduling level. 

Update: Starting March 31, the Waiting Room feature will be automatically turned on by default. Visit our support page for more information on adjusting your Waiting Room settings.

How to enable the Waiting Room

Lock down the chat

Teachers can restrict the in-class chat so students cannot privately message other students. We’d recommend controlling chat access in your in-meeting toolbar controls (rather than disabling it altogether) so students can still interact with the teacher as needed.

How to control chat access

Remove a participant

If someone who’s not meant to be there somehow manages to join your virtual classroom, you can easily remove them from the Participants menu. Hover over their name, and the Remove option (among other options) will appear. Click to remove them from your virtual classroom, and they won’t be allowed back in.

How to remove a participant

Security options when scheduling a class

The cool thing about Zoom is that you have these and other protection options at your fingertips when scheduling a class and before you ever have to change anything in front of your students. Here are a few of the most applicable:

  • Require registrationThis shows you every email address of everyone who signed up to join your class and can help you evaluate who’s attending.
  • Use a random meeting ID: It’s best practice to generate a random meeting ID for your class, so it can’t be shared multiple times. This is the better alternative to using your Personal Meeting ID, which is not advised because it’s basically an ongoing meeting that’s always running.
  • Password-protect the classroomCreate a password and share with your students via school email so only those intended to join can access a virtual classroom.
  • Allow only authenticated users to join: Checking this box means only members of your school who are signed into their Zoom account can access this particular class.
  • Disable join before hostStudents cannot join class before the teacher joins and will see a pop-up that says, “The meeting is waiting for the host to join.“
  • Manage annotation: Teachers should disable participant annotation in the screen sharing controls to prevent students from annotating on a shared screen and disrupting class.

Note: For schools scheduling classes through an LMS, some of these settings might appear a little differently. Visit if you need assistance.

Additionally, teachers have a couple in-meeting options to control your virtual classroom:

  • Disable video: Turn off a student’s video to block distracting content or inappropriate gestures while class is in session.
  • Mute students: Mute/unmute individual students or all of them at once. Mute Upon Entry (in your settings) is also available to keep the clamor at bay when everyone files in.
  • Attendee on-hold: An alternative to removing a user, you can momentarily disable their audio/video connections. Click on the attendee’s video thumbnail and select Start Attendee On-Hold to activate.

Important recommendation for teachers

Teachers: We encourage you to NOT post pictures of your virtual class on social media or elsewhere online. While it’s fun to share in the excitement of connecting over Zoom, we are particularly committed to protecting the privacy of K-12 users and discourage publicly posting images of students, especially minors, in a Zoom virtual classroom.