Communications Security Establishment

The Communications Security Establishment (CSE) is one of Canada’s key security and intelligence organizations, focussed on collecting foreign signals intelligence in support of the Government of Canada’s priorities, and on helping protect the computer networks and information of greatest importance to Canada. We also provide assistance to federal law enforcement and security organizations in their legally authorized activities, when they may require our unique technical capabilities.

We are in the process of moving our services and information to

Our current Communications Security Establishment website will remain available until the move to is complete.

Our services and information

Inside CSE

Learn about who we are and what we do to protect Canada and Canadians.

IT security

Learn about information technology security through our programs, publications, interactive applications and videos.


Find out what we are looking for and what CSE has to offer you.

Tutte Institute for mathematics and computing

Learn about this world-class, high-tech institute that conducts research in fundamental mathematics and computer science.

The Edward Drake Building

Learn about our new facility, its construction and some of its green features.

What we are doing


ITSLC Course catalogue

ITSLC Course catalogue

Our goal is to provide you with the tools you require to deliver on your own IT security mandate.

Cyber Journal

Cyber Journal

Cyber Journal is a newsletter prepared for the GC IT stakeholders and is published on a periodic basis.

CSE named Top Employer

CSE named Top Employer

CSE is a Top Employer in the National Capital Region in 2015.

Corporate information

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