Today, the Communications Security Establishment Canada (CSE) released its 2025-2026 Annual Report, outlining the work of CSE and its Canadian Centre for Cyber Security (Cyber Centre) from April 1, 2025, to March 31, 2026.
In a year marked by an increasingly complex and evolving threat landscape, CSE leveraged all aspects of its mandate, and worked with domestic and international partners, to protect Canada and Canadians. Through foreign signals intelligence and cyber capabilities, CSE helped inform government decision-making, defend critical systems, and address threats to Canada's security, sovereignty and economic prosperity.
Highlights of the 2025-2026 annual report include:
- CSE produced 3,976 foreign intelligence reports to inform the Government of Canada about foreign-based threats and global events
- The Cyber Centre responded to more than 3,200 cyber security incidents affecting federal institutions and critical infrastructure
- The Cyber Centre issued 25 alerts, 995 advisories and over 97,000 National Cyber Threat Notification System alerts to 1,363 subscribed organizations
- CSE took action against 10 of the most significant ransomware groups causing harm to Canada and its allies
- CSE conducted 1,772 supply chain risk assessments in 2025 to 2026 to strengthen cyber resilience across government
- In the last year, CSE received a total of 13 Ministerial Authorizations, including 4 related to foreign cyber operations
- CSE began advancing work enabled by historic defence investments, including modern secure digital infrastructure, stronger cyber defence capabilities, artificial intelligence, post-quantum cryptography and secure collaboration with trusted allies.
- CSE grew its workforce to 4,178 employees, an 8.1% increase from 2024-2025, while strengthening inclusion, accessibility, wellness and talent development.
Together, these activities demonstrate how CSE is using its integrated mandate to address threats to Canada and its interests, while strengthening the country's digital security and resilience.
