- "So we need to break into one of the most heavily guarded buildings on one of the Empire's most critical and well-defended worlds and steal the cipher without setting off the self-destruct sequence?"
- ―Gnost-Dural outlining the plan
The mission to Ziost took place during the Galactic War as part of Operation End Game. In order to sabotage and defeat the Ascendant Spear, Jedi Master Gnost-Dural and SIS agent Theron Shan stole a Black cipher from the office of the Imperial Minister of Logistics, Davidge. Feigning a terrorist assassination, they were able to replace the functioning cipher with a damaged one and escaped back to Coruscant with the functioning cipher. They were then able to use this cipher to track the Ascendant Spear's movements.
- The Old Republic: Annihilation (First appearance)