They have repeatedly denied knowing anything, then attempted to hide behind the Canadian military or the previous government.
This from Scott Horton, constitutional law expert who writes a blog titled No Comment for Harper's (no connection to Stephen Harper, not at all).
Scott Horton, March 19th, Harper's, No Comment
The Pentagon loses a Skirmish with WikiLeaks
On the subject of secrecy:
In 1960, a congressional committee, recognizing the need to rein in the extravagant claims of secrecy that were thriving in the Department of Defense and intelligence community, observed that
Secrecy—the first refuge of incompetents—must be at a bare minimum in a democratic society, for a fully informed public is the basis of self-government. Those elected or appointed to positions of executive authority must recognize that government, in a democracy, cannot be wiser than the people.
I don't suppose the Harper regime is listening, though. They never do.