Possible Virus Inside Realms

What I expected to happen: Me and my friend's would go on gamelover9000's realm and have some fun.

What actually happened: I got kicked from realms by my Security VPN realms and got a message from my security VPN. My friend didn't have a security VPN and what happened was he could see messages from the Hypixel server in other servers and his screen went blank and he couldn't turn his computer off. (He had to restart it.)

 

Steps to recreate: Unknown but probably to go onto a 1.16.1 realm without security VPN. (Update: My friend went onto 1.15.2 and it still didn't work)