Nuclear plants provide about 20% of the U.S. electric power supply, but most of the 104 operating reactors date back to the 1960s and '70s.

CNN: U.S. backs project for small nuclear reactors

He said alongside the software, people still needed to run a firewall and keep their browser and operating system up to date with the latest patches and fixes.

BBC: Microsoft launches free security

The company will continue to deliver free security fixes for the operating system beyond this cutoff date, however maintenance updates will require the purchase of extended support from Microsoft.

ENGADGET: Microsoft extends free Windows Server 2008 support through January 15th, 2015