That's an excellent question.
In actual fact, the CSE already protects the Canadian government. Over the years, we've had to learn to deal with that kind of threat. You're entirely right. If it took us two days to react, we'd be in a very bad way. Consequently, we've put systems in place that can detect and follow a threat at its speed, what we, in our jargon, call working "at cyber speed".
That's exactly what happens with Elections Canada, an agency that we've been working with since 2015. We help it secure its networks and we put the necessary tools, systems and relational processes in place so that the time it takes to react to a threat is measured in minutes, not hours or days.