The title of this article is a nickname, call sign, or alias.

This article is about a subject that lacks an official name and was known only by its nickname, call sign, or alias.

"The dispatch from Cipher Four is in. More Republic support on Manaan."
―Minder Nine[src]

Cipher Four was a codename of a Cipher Agent within Imperial Intelligence of the Sith Empire. In 3642 BBY he relayed to Minder Nine report on the current situation on Manaan.