Wikipedia to the rescue -
Canada:
http://en.wikipedia.org/wiki/Classified_information#Designated_information
Designated information
Designated information is not classified. Designated information
pertains to any sensitive information that does not relate to
national security and cannot be disclosed under the access and
privacy legislation because of the possible injury to particular
public or private interests.
Protected C (Extremely Sensitive designated information):...
Protected B (Particularly Sensitive designated information): ...
Protected A (Low-Sensitive designated information): is applied
to low sensitivity information that should not be disclosed to
the public without authorisation and could reasonably be
expected to cause injury or embarrassment outside the national
interest. Example of Protected A information could include
employee number, pay deposit banking information, etc.
--
Peter Duncanson, UK
(in alt.english.usage)