Microsoft Customer Guidance for WannaCrypt Attacks
As you no doubt are aware, the WannaCrypt attacks over the last couple of weeks have been quite pervasive. Microsoft has provided some guidance on the WannaCrypt attacks that I thought you should be aware of, both for Azure as well as on-premises.
Of note, Microsoft has released security patches for OS versions that are no longer in mainstream support, i.e. Windows XP, Windows 8 and Windows Server 2003.