If anyone is crazy enough bring p 0 r n 0 g r a p h y to Canada then confiscation of the computer and Hdd's will be the least of your worries.
Pirated software is copyright theft. The rules are always being reviewed and changed - so the information below may be dated.
"In Canada, the Customs Act permits the CBSA to detain goods that are prohibited, controlled, or regulated by any Act of Parliament. However, there is no legislation that specifically identifies counterfeit or pirated goods themselves as being prohibited, controlled, or regulated."
"In addition to civil remedies that are available under the Copyright and Trademark statutes, Canadian law also contains criminal penalties for certain counterfeiting and piracy offences. The Copyright Act provides criminal penalties for infringement of copyright that include fines of up to $1 million and imprisonment for up to five years. "
Check the details at the link below.
http://www.parl.gc.ca/HousePublications/Publication.aspx?DocId=3060548&Language=E&Mode=1&Parl=39&Ses=1&File=33