I attended a PhD defense yesterday that got zoom bombed. They quickly moved it to an actively managed call and the presenter did a fine job of keeping their composure and getting back on track. Now we're circulating guides about how to set up secure rooms and webinars, so I don't anticipate this will happen again. Normally I'd wave this off as a childish prank, but both the URL and loading screen prominently indicate…
Either that... or it's a way to get high profile attention to blatant security issues in a commonly used business meeting tool where sometimes sensitive information is shared.