I feel a bit bad singling out Canada, because 18 countries were attacked and very few of them notified their politicians. The Canadian government took the same stance as the United Kingdom government, which was not to tell politicians that they had been subject to a state-sponsored attack.
In fact, not only was it three years later, but it wasn't until it had been publicly announced by the United States government that this became news. We, the IPAC secretariat, had to brief politicians about what had happened to them. I would argue that this is completely inadequate. I mean, there were people who were attacked within Canada who had senior positions in committees, such as yourselves, and were potentially victims of a very serious cyber-attack. It was dismissed and swept under the carpet by the Canadian government in the same way that it was by the United Kingdom government.
This isn't a party political point. Regrettably, it's to do with the posture of countries towards Beijing. I believe that they did not want to attribute the attack for fear of the diplomatic consequences of doing so. It was the same in the United Kingdom.