From the Canadian RCMP:
Internet Casinos and Gambling
Most jurisdictions have strict regulations with regards to legal casinos and gambling. Any form of gambling that is not regulated by the province is illegal. Since the province has not licensed any online casinos, all forms of online gambling are illegal and the owners and operators of a casino may be charged under section 201(1) of the Criminal Code of Canada “keeping a common betting house”. The patrons may be liable to Criminal Code charges under section 201(2)(a) of the Criminal Code of Canada, “being found in a common betting house”.