# Communications Security Establishment ## Definition The Communications Security Establishment (CSE) is Canada's national cryptologic agency for foreign signals intelligence and cyber security. ## Corpus Context CSE is the Canadian technical-intelligence node in [[wiki/Five Eyes|Five Eyes]] and participates in the alliance layer described by [[wiki/Intelligence Liaison|Intelligence Liaison]]. ## Sources / Provenance - [Communications Security Establishment Canada](https://www.cse-cst.gc.ca/en)