2007-2008 Annual Report of the Communications Security Establishment Commissioner
The Establishment, or CSE, is Canada's national cryptologic agency working under the control of the Department of National Defence.
CSE code-breakers protect the Government of Canada's IT infrastructure from hostile attacks and provide foreign signals intelligence services (electronic espionage). It also provides technical and operational assistance to federal law enforcement and security agencies.
The Commissioner, the Honourable Charles D. Gonthier, Q.C., is the official watchdog over the agency's activities, which include intercepting, decoding, and analyzing phone calls, e-mails and other electronic communications of Canada's international adversaries.
Gonthier is a former justice of the Supreme Court of Canada.