Everybody runs Windows. It is the most insecure operating system in history. Stick a flashdrive into a USB port and Windows will upload and execute any programming that might be on the flashdrive. Windows allows any program access to the internet without ever asking the user if this program is safe. Windows comes out of the box with a remote access loophole that allows foreign computers to gain complete control of your machine.
I have to believe that the agencies that got hacked this week were all running Windows.
They all should have been running Linux.