ocilfa :
US Government: "Sorry, but your suggestion makes too much sense. Our "specialists" will instead update our McAfee, and perhaps upgrade our browsers to Internet Explorer 8. Thank you for your taxes and have a nice day."
Not to stick up for them but most are using IE 10 and Windows 7. My wife works for the Arizona DPS who works with all state, local and federal entities and my best friend is in the Air Force at the Pentagon. They are not that far behind.
That said, the main issue is that the people in charge are clueless to a basic computer let alone networking and security behind that network. They need to employ people who understand that an IT infrastructure is no longer a luxury but it is a necessity and with that comes the need to actually utilize the best security.
A company/government cannot survive without a IT infrastructure but the issue is they see it the same way they see everything; if it works don't fix it. The problem is that while a Windows XP system will still work, it is not secure. While 8/8.1 was annoying to learn it is more secure. Server 2012 R2 is more secure.
Instead of utilizing the proper people they have people who wouldn't know a router from a switch from a firewall even if they had access to the internet to look it up.