To date, no Igaware customers have been victims of any ransomeware, including the latest WCRY outbreak.
To ensure you are protected, make sure that Windows machines have the relevant Microsoft patch – MS17-010 (SMB RCE). This was release in March 2017. See https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
This will stop the ability to install the backdoor on the windows machine that can then be exploited.
It’s thought that the backdoor is distributed via a phishing email. You will be protected by Igaware Email Filtering if you are using Igaware as your email server.
Any versions of windows XP should have file sharing disabled / or disconnected from the network as there is no patch currently available.