Ransomware is a malware that is again in the list of security concerns. Not only for companies, but also for Government security and even at personal use. IT departments should be aware and have the right knowledge to how to fight it.
Teach the user how to rename, unmount, delete and upgrade VMFS datastores.
Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore: