As international students arrive at the port of entry, our officers are very adept at detecting any fraud. In some cases, before IRCC issues a student visa, the individual will be subject to a security screening. That's conducted in part by the CBSA, so I should have started with that.
Sometimes before a student visa is issued, the applicant is subject to security screening. When they are issued a student visa and they come to the port of entry, the officers examine that. As I said, officers are very adept at detecting fraud and can pose questions if they think there are any issues.