Based on precedents of the House of Commons followed for many years and noted at paragraph 446 in Beauchesne's, when responding to inquiries or parliamentary returns, the Canadian Security Intelligence Service, CSIS, does not comment on operational activities nor release specific details of its budget and expenditures for reasons of national security. This practice is consistent with the policy set out in section 19 of the Canadian Security Intelligence Service Act that requires that the service not disclose information obtained in the performance of its duties and functions under this act.
In the House of Commons on May 5th, 2000. See this statement in context.