How to preced after an hacker attack in an Zoom Meeting?

Dear Community,

we had a international Zoom Meeting last Sunday and were witness of an Hacker Attack. Apparently someone with a Russian Username  took control over the Whiteboard function and painted Svastikas and other vulgar stuff all over the board. After that the chat was fluted with svastikas (over 150 Messages in seconds). Also writings like " We have all your data"

My Question is:

How can that be avoided in the future without disabling all the functions?

Can it be investigated by Zoom how it came about?

Thank you for your reply and all the best,

Binaural