If Ms. Hogue and her counsel are not persuaded by government arguments, she will require that the evidence be presented in public hearings.
On the other hand, if she agrees to a closed-door session, known as an in camera hearing, a summary of the evidence presented will be prepared for public release.
Ms. Hogue said that if the government and the commission disagree on the need to keep certain information under wraps, she will notify the government of her intention to disclose it.
In turn, the government will then have the option of bringing the dispute before the Federal Court.
“The Attorney General of Canada has already advised the Commission that it will be necessary to receive certain evidence in camera, for reasons of national security or other public interest,” the notice said.
The notice on Feb. 23 from Mr.Hogue followed an initial one-week hearing, held in late January and early February, that explored ways to be transparent about the highly sensitive subject.
That risk, they said, is compounded by the “mosaic effect”—where adversaries track and piece together small pieces of intelligence over a long period to reveal a clearer picture.
The lawyers suggested options including the release of some material with redactions, publication of summaries of “a limited number of documents or topics” and closed-door hearings that would be followed by release of a public summary.
That could prompt commission counsel to challenge blacked-out passages, or work toward the release of summaries of the sensitive information, the notice said.
If a person who fears for their safety—or that of family or associates—files an application to testify behind closed doors, the commissioner will decide whether and how to grant such protection, the notice added.
“The Commission will prepare a summary of this testimony and, before making it public, will ascertain from the witness that nothing contained therein will put the witness or those close to them at risk.”