On my end, I am always prepared for the worst. Today it happened.

I am writing to you from my Apple MacBook Pro. VMWare Fusion 8 is always
running up-to-date copies of virtual machines from my main development
machine (Dell Precision Workstation). The Dell machine is running Windows 7
Ultimate Edition and VMWare Workstation 12 with 22 VMs. All my "real" work
is done in VMs. The host is protected by Microsoft Windows Defender and
normally I do not even open Internet Explorer on this machine. But this
morning, I made a mistake (too much coffee or not enough) and checked a web
site from that host. And the damn web site infected my UAC-enabled and
Windows Defender protected host system with a brand new version of
CryptoWall. Ouch! The FBI is right, this thing is dangerous. It
immediately started to encrypt all my files on the host.

I shutdown the system and ordered a new SSD from Amazon (same-day delivery,
should be here in 7 hours). So I'll have a busy weekend installing Windows
10 Enterprise and VMWare on my Dell Precision Workstation.

To the developers of CryptoWall, you can rot in hell and I really wouldn't
care.

And to my friends, "LOOP always always always END" have a current backup of
your data.

Friedrich