Canadian Security Intelligence Service director David Vigneault is expected to clarify whether stark CSIS conclusions contained in briefing materials were actually conveyed to government officials.
In a classified interview with the commission of inquiry in February, Trudeau said leaks suggesting otherwise were extremely damaging to Canadians' confidence in the democratic process.
The director of the Liberal election campaign in 2019 says he recommended Justin Trudeau take no action on alleged nomination irregularities in a Toronto riding.
Canada's spy agency knew China "clandestinely and deceptively interfered" in the past two federal votes, according to a top-secret briefing document that emerged on Monday at the public inquiry into foreign interference.
A federal inquiry into foreign interference is set to hear from the Independent MP at the centre of allegations about foreign meddling in Canadian elections.
The March hearings are intended to delve into allegations of foreign interference by China, India, Russia and others in the 2019 and 2021 federal elections, with a report on these matters due May 3.
The Business Council of Canada is also urging the federal government to borrow a U.S. idea and create a new body that would ensure the intelligence is securely and broadly shared across the Canadian economy.
Canada's spy service warns that dramatic shifts caused by climate change and the ensuing fractious upheaval around the world could leave Canada vulnerable, imperilling its food and water supplies, energy security and Arctic sovereignty.
A CSIS officer who is among a group of whistleblowers raising allegations of sexual assault and harassment in the spy agency's British Columbia office says she hopes their actions have "lit a match" to change what she calls a "dark and disturbing place."