I have to laugh about all this concern for exploits affecting no longer supported (or soon to be) OS's anyway. You're going to love Windows 10. Microsoft has built in exploits that make most of the stuff you worry about light weight. Ever wonder why the NSA threw in the towel so easily when the courts told them to stop evesdropping on us? With the cloud and now Win 10 they must be like kids in a candy store! -Hal
if a person is really concerned about their personal privacy, the simplest solution is to
purchase a computer running OSX with cash, encrypt the hard drive, download firefox
for TOR, install it, and then go forth into the internet, not providing any user
identifiable information.
if that isn't enough, put on a tinfoil hat, and go here....
http://www.ironkey.com/en-US/encrypted-storage-drives/250-personal.html
an interesting fact, is that they provide on this fips level 3 hardened device, a copy of firefox for
secure internet browsing.