Let me explain where my question is coming from.
We recently gained access to about 400 pages of completely redacted documents concerning the Winnipeg laboratory. They were released to the public, with the exception of information regarding privacy and investigative methods used by the Canadian Security Intelligence Service. In the activity that I took part in, we saw a form of preventive redaction. There was a bit of over‑redaction.
In some cases, would it be better not to release information at all, in order to limit exposure? Are documents usually redacted too much? In the case of the Winnipeg laboratory, I was struck by the shift from a totally redacted document to a document with very little redaction.