Destiny 2 Cipher Decoders are used to unlock Encrypted Caches in the Festival of the Lost Haunted Forest. So let's explain Cipher Decoders, how to get them in Destiny 2, and their impact in the game.

The solution to one of the Zodiac Killer’s cipher, unsolved for 51 years, was cracked by a team of citizen codebreakers earlier this month, with the FBI confirming the decoded message’s authenticity.