{"id":1466,"date":"2026-03-11T18:13:17","date_gmt":"2026-03-11T22:13:17","guid":{"rendered":"https:\/\/chronicle.hvcc.edu\/wpdev\/?p=1466"},"modified":"2026-03-11T18:13:17","modified_gmt":"2026-03-11T22:13:17","slug":"1466-2","status":"publish","type":"post","link":"https:\/\/chronicle.hvcc.edu\/wpdev\/1466-2\/","title":{"rendered":""},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>Skip to main content<br \/>\nUC Berkeley<br \/>\nInformation Security Office<br \/>\nSearch Terms<br \/>\nSearch this site<br \/>\nAbout<br \/>\nEducation &amp; Awareness<br \/>\nResources<br \/>\nPolicy<br \/>\nServices<br \/>\nQuick Links<br \/>\nContact Us<br \/>\nYou are here<br \/>\nHome Resources Cybersecurity and COVID-19 Settings for Preventing Zoom-Bombing<br \/>\nSettings for Preventing Zoom-Bombing<br \/>\nWhat is Zoom-bombing?<br \/>\nZoom-bombing is the term for when individuals &#8220;gate-crash&#8221; Zoom meetings. These uninvited guests share their screens to bombard real attendees with disturbing pornographic and\/or violent imagery. Most of these are perpetrated via publicly available Zoom links; however, not all depending on your settings. Here are ways to protect you and your guests from falling victim.<\/p>\n<p>Reminders on using Zoom to host public events:<br \/>\nIf you share your meeting link on social media or another public location (like a public bCal invite) anyone with the link can join your meeting. Here are some tips you can use to help when needing a public meeting space:<\/p>\n<p>Avoid using your Personal Meeting ID(link is external) (PMI) to host public events. Your PMI is essentially one continuous meeting and people can pop in and out all the time. Learn about meeting IDs(link is external) and how to generate a random meeting ID (at the 0:27 mark(link is external)) in this video tutorial(link is external).<br \/>\nFamiliarize yourself with Zoom\u2019s settings and features. Understand how to protect your virtual space when you need to. For example, the Waiting Room(link is external) (details below) is a helpful feature for hosts to control who comes and goes.<br \/>\nRead on for a list of Zoom features that can help you safely share your Zoom without unwanted interruptions.<\/p>\n<p>I. Manage screen sharing<br \/>\nThe first rule of Zoom: Don\u2019t give up control of your screen.<\/p>\n<p>You do not want random people in your public event taking control of the screen and sharing unwanted content with the group. You can restrict this \u2014 before the meeting and during the meeting in the host control bar \u2014 so that you\u2019re the only one who can screen-share.<\/p>\n<p>To prevent participants from screen sharing(link is external) during a call, using the host controls at the bottom, click the arrow next to Share Screen and then Advanced Sharing Options.<\/p>\n<p>Advanced Sharing Options<\/p>\n<p>Under \u201cWho can share?\u201d choose \u201cOnly Host\u201d and close the window. You can also lock the Screen Share by default for all your meetings in your web settings.<\/p>\n<p>Prevent others from screen sharing<\/p>\n<p>II. Manage your participants<br \/>\nSome other features to help secure your Zoom event and host with confidence:<\/p>\n<p>Allow only signed-in users to join:(link is external) If someone tries to join your event and isn\u2019t logged into Zoom with the email they were invited through, they will receive this message:<br \/>\nAuthorized Attendees<\/p>\n<p>This is useful if you want to control your guest list and invite only those you want at your event \u2014 other students at your school or colleagues, for example.<\/p>\n<p>Lock the meeting(link is external): When you lock a Zoom Meeting that\u2019s already started, no new participants can join, even if they have the meeting ID and password (if you have required one). In the meeting, click Participants at the bottom of your Zoom window. In the Participants pop-up, click the button that says Lock Meeting.<br \/>\nSet up your own two-factor authentication:(link is external) You don\u2019t have to share the actual meeting link. Generate a random Meeting ID when scheduling your event and require a password to join. Then you can share that Meeting ID through a public setting\/social media, but only send the password to join via DM.<br \/>\nRemove unwanted or disruptive participants:(link is external) From that Participants menu, you can mouse over a participant\u2019s name, and several options will appear, including Remove. Click that to kick someone out of the meeting.<br \/>\nAllow removed participants to rejoin:(link is external) When you do remove someone, they can\u2019t rejoin the meeting. But you can toggle your settings to allow removed participants to rejoin, in case you boot the wrong person.<br \/>\nPut them on hold:(link is external) You can put each participant on a temporary hold, including the attendees\u2019 video and audio connections. Click on someone\u2019s video thumbnail and select Start Attendee On Hold to activate this feature. Click Take Off Hold in the Participants list when you\u2019re ready to have them back.<br \/>\nDisable video:(link is external) Hosts can turn someone\u2019s video off. This will allow hosts to block unwanted, distracting, or inappropriate gestures on video.<br \/>\nMute participants:(link is external) Hosts can mute\/unmute individual participants or all of them at once. Hosts can block unwanted, distracting, or inappropriate noise from other participants. You can also enable Mute Upon Entry in your settings to keep the noise down in large meetings.<br \/>\nTurn off file transfer:(link is external) In-meeting file transfer allows people to share files through the in-meeting chat. Toggle this off to keep the chat from getting bombarded with unsolicited pics, GIFs, memes, and other content.<br \/>\nTurn off annotation:(link is external) You and your attendees can doodle and mark up content together using annotations during screen share. You can disable the annotation feature in your Zoom settings to prevent people from using it.<br \/>\nDisable private chat:(link is external) Zoom has in-meeting chat for everyone or participants can message each other privately. Restrict participants\u2019 ability to chat amongst one another while your event is going on and cut back on distractions. This is really to prevent anyone from getting unwanted messages during the meeting.<br \/>\nIII. Use a Waiting Room<br \/>\nOne of the best ways to use Zoom for public events is to enable the Waiting Room(link is external) feature. Just like it sounds, the Waiting Room is a virtual staging area that stops your guests from joining until you\u2019re ready for them, like a bouncer carefully monitoring who gets let in.<\/p>\n<p>Meeting hosts can customize Waiting Room settings for additional control, and you can even personalize the message(link is external) people see when they hit the Waiting Room so they know they\u2019re in the right spot. This message is the perfect place to post rules or guidelines for your meeting.<\/p>\n<p>Waiting Room message<\/p>\n<p>The Waiting Room(link is external) is really a great way to screen who\u2019s trying to enter your event and keep unwanted guests out.<\/p>\n<p>Tips courtesy of Zoom (March 20, 2020) How to Keep the Party Crashers from Crashing Your Zoom Event: https:\/\/blog.zoom.us\/wordpress\/2020\/03\/20\/keep-the-party-crashers-from-crashing-your-zoom-event\/(link is external)<\/p>\n<p>TOPICS<br \/>\nCybersecurity Awarenesstopic page<br \/>\nUniversity of California Berkeley<br \/>\nContact Us<br \/>\nCopyright \u00a9 2020 UC Regents; all rights reserved<\/p>\n<p>Powered by Open Berkeley(link is external)<\/p>\n<p>Privacy Statement<\/p>\n<p>Back to Top<\/p>\n<p>Services closed<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Published:<\/strong>\u00a0 by\u00a0j.brennan<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Skip to main content UC Berkeley Information Security Office Search Terms Search this site About Education &amp; Awareness Resources&hellip;<\/p>\n","protected":false},"author":2086,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1466","post","type-post","status-publish","format-standard","hentry","category-campus-announcements"],"_links":{"self":[{"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/posts\/1466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/users\/2086"}],"replies":[{"embeddable":true,"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/comments?post=1466"}],"version-history":[{"count":1,"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/posts\/1466\/revisions"}],"predecessor-version":[{"id":34296,"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/posts\/1466\/revisions\/34296"}],"wp:attachment":[{"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/media?parent=1466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/categories?post=1466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chronicle.hvcc.edu\/wpdev\/wp-json\/wp\/v2\/tags?post=1466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}