The U.S. nuclear code used to be 8 "0" for 15 years.

Changjiang Commercial News reported yesterday that U.S. nuclear code has always been the top secret in the United States, but in the early days of the launch of the nuclear password system, the password was only "00000000", very easy to be cracked. Blair, who once served as a "militia" nuclear missile launcher, wrote that, in the 60 to 70 's, the military was more concerned about the complexity of the passwords than the nuclear weapons were used to respond to enemy attacks in real time. Former US President John F. Kennedy signed a decree in 1962 requiring all nuclear bombs to be equipped with a "grant operation" device that would ensure that a bomb is fired only after the transmitter has entered the correct password. The report said the Strategic Air Command then set "00000000" for the password. Mr Blair recalls that 8 "0" of the nuclear code has been in use since 1962 until 1977 and finally changed.