Tuesday December 3rd, 2013 informationliberation.com
Dial 00000000 for Armageddon. USís top secret launch nuclear launch code was frighteningly stupid (The Daily Mail)
For nearly 20 years, the secret code to authorize launching U.S. nuclear missiles, and starting World War III, was terrifyingly simple and even noted down on a checklist.

From 1962, when John F Kennedy instituted PAL encoding on nuclear weapons, until 1977, the combination to fire the devastating missiles at the height of the Cold War was just 00000000.

This was chosen by Strategic Air Command in an effort to make the weapons as quick and as easy to launch as possible, as reported by Today I Found Out.