If someone bad has had access to your box, I wouldn't trust it any more.
Backup your containers and VMS and install a fresh proxmox host.
Unless you can be 100% sure they have not left any nasty things on it.
				
			Backup your containers and VMS and install a fresh proxmox host.
Unless you can be 100% sure they have not left any nasty things on it.
 
	