When the Blaster worm hit in 2003, the Unix people laughed, because they were immune. The Morris worm was ancient history, because it had been 15 years since that hit.
XP is almost ancient history. You shouldn't be running it, any more than you should've been running something vulnerable to the Morris worm in 2003.
edit 'omh makes a good point below
I also know of people running XP because it's incredibly stable now and they don't see anything in newer versions of Windows they really want or need.
It's big, but it's not that big, fifth or sixth largest employer in the world according to Wikipedia:
http://en.wikipedia.org/wiki/List_of_largest_employers#Large...
Plus DoD is several branches so that's a bit of a push.
Maybe they should standardise on a particular UI for specific applications - maybe with desktop icons in specific locations for launching those apps. Then they remove the OS from user view entirely - any OS or version of an OS that will present the particular applications with the required views would then be appropriate.
That way when determining if they can upgrade to Windows 10 they just need to ask "will our current apps run, with largely coterminous views and function? Can the OS login direct to our launch icon layout?".
Most users use applications rather than OS, especially in a work setting I'd warrant.
They don't need security updates? Aren't they connected to the internet?
I am currently creating an application that has "runs on Windows XP" as part of the requirements list.
XP was the newest possible version of Windows as recently as 2007, and since most people ignored Vista it was the default install for many (most?) people up until Windows 7, which was only 5 years ago. SP3 came out in 2008 and significantly improved the features and security.
Combined with some odd licenses and old PC stock in stores there were plenty of people buying new laptops in 2010 with XP installed.
Yes, it's old. But more like 5-6 years than 13.
Anyone who is still running Windows XP has this coming.
Of course they are under no obligation to.
And some might argue that giving people updates so they can continue to use IE6 is as bad as giving an alcoholic a double G&T to help keep withdrawal symptoms at bay...