Federal · C-55.5 was filedIn force June 15, 2026 · detected October 1, 2026

Canada's new Cyber Security Act introduces mandatory protections for critical infrastructure operators

An Act respecting cyber security, amending the Telecommunications Act and making consequential amendments to other Acts

Plain-language summary · AI-assisted · not legal advice

A new federal Act creates two main frameworks: amendments to the Telecommunications Act and a new Critical Cyber Systems Protection Act (Part 2, not yet in force). It targets operators of vital services and systems — including telecommunications, pipelines, power lines, nuclear energy, transportation, banking, and clearing and settlement systems — requiring them to protect critical cyber systems. Part 2 will take effect on a date set by the Governor in Council, so operators in these sectors should monitor for that order. A mandatory ministerial review of the Act's effectiveness must be completed within five years of royal assent, with findings tabled in Parliament within 90 days after the review concludes.

Who this affects: telecommunications service providers · pipeline and power line operators · nuclear energy system operators · federally regulated transportation operators · banks and clearing and settlement system operators

Source of truth: C-55.5 on the official source

Legislative text © King's Printer for Ontario. This page is not an official version of the law and is not legal advice. Verify against the official source before acting.

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