Most Zoom meetings have a public link that, if clicked, allow anyone to join. The phenomenon of “ Zoombombing,” in which an uninvited guest uses Zoom’s screen-sharing feature to broadcast porn and shock videos, has been on the rise. With people around the world isolating indoors to protect themselves against the spread of the coronavirus, it has never been more popular.īut its popularity has also attracted trolls. Zoom is an easy-to-use videoconferencing tool with a generous free tier.