I never say something is secure until I have an opportunity to examine it. I don't really know what Parliament does, but my expectation is that as a Five Eyes member, we would have top world-class cybersecurity. I've spoken to the CSE before. They are very capable, but again, as a member of the public...you know.
Evidence of meeting #22 for Procedure and House Affairs in the 43rd Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was vote.
A recording is available from Parliament.