Zoom comprehensive response to issues (Zoom):

https://blog.zoom.us/wordpress/2020/04/01/a-message-to-our-users/

Zoom blog post for securing meetings (Zoom):

https://blog.zoom.us/wordpress/2020/03/20/keep-uninvited-guests-out-of-your-zoomevent/

Securing Your Zoom Meetings (Wired):

https://www.wired.com/story/keep-zoom-chats-private-secure/ 

FBI Warning (FBI): 

https://www.fbi.gov/contact-us/field-offices/boston/news/pressreleases/fbi-warns-of-teleconferencing-and-online-classroom-hijacking-during-covid19-pandemic

Zoom Harassment and Abuse (New York Times): https://www.nytimes.com/2020/04/03/technology/zoom-harassment-abuse-racism-fbi-warning.html?searchResultPosition=4