The "cypher case" is a controversy that has been roiling Pakistan politics. It is related to a diplomatic cable, also known as a cypher, that allegedly went missing when it was in the possession of former Pakistani Prime Minister Imran Khan. The cable contained evidence of how the United States had conspired to oust him from power. The term "cypher" refers to a secret, restricted diplomatic communication written in some kind of code language, with a specific number and date assigned to it. The cypher is deeply encrypted and difficult to decode, and is divided into sections. In the context of the controversy, citing the cypher number and date is considered a violation of the official secrets act. However, it is important to note that "cypher" is also a keyword in the context of the Cypher query language used in Neo4j, a graph database management system.