How to Decrypt the Floppy Disk
This is a guide on how to decrypt the floppy disk in Call of Duty Black Ops Cold War campaign Operation Chaos. This is a COD Black Ops Cold War side mission that can be performed in between main missions of the story campaign. This mission has you take down the ex-CIA op and his whole spy ring, as well. In order to complete the mission you need to decrypt the floppy disk.
The evidenced needed to crack the code and decrypt the floppy disk is rewarded through actions in the campaign missions:
Redlight, Greenlight: The front page of the Observer.
Nowhere To Run: Capture Qasim Javadia for the Coded Message.
Brick in the Wall: The numbers station broadcast.
The missions can be replayed in case you miss them the first time through. Once all three are located the floppy disk may be decrypted. Examine all three pieces of evidence. The Coded Message has numbers that are in red and blue that follow a pattern which is different for every play through. Put the numbers you found together to create a four digit code. Take that code number and examine the Numbers Station Broadcast next. The city that is listed with your numbers is the password for the computer that will be used further in the sequence of events. Examine the front page of the Observer next and the headline will display letters in red ink. Descramble the red letters and examine the numbers station broadcast. The descrambled word will match the name of one of the places listed in the numbers station broadcast. Every playthrough the location name changes. Examine the Numbers Station Broadcast AGAIN and find the four numbers that match whatever city name you just deciphered. Enter these four digits as the “code” for the computer used later in this sequence of events.
After all of these things have been completed, selecting “Decrypt Floppy Disk” will be available and the aforementioned computer will be available to enter your codes and phrases. Enter the four digit code you found last for “Code”, enter the password you found second for “Passphrase”, and then authenticate the code and passphrase. This should complete the task and provide the info needed to complete Operation Chaos.