Hi John,
Yes, the instances I'm thinking of were in Canada. The case of the student paper was a real outlier as well - she worked in a classified area, but used unclassified material and basic theoretical works to develop models that were then classified (and I can't give any more details ).
In the vast, 99.99999% of cases, there is no classification even when policy critical material is published. I am also aware of a very few cases of" voluntary classification", for want of a better term, where a paper is submitted to an organization rather than for publication due to some security consideration - red team scenario planning in all the cases I'm aware of.
Marc
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