One thing you will see in your CAIPS / GCMS is security screening. I just found on the web what is security screening and what they do.
You can be asked to await further checks while your security is pending. Have a look. Thanks http://www.csis-scrs.gc.ca/bts/fq-eng.asp
What is security screening?
Security screening is a process by which the name of a security clearance applicant is verified against CSIS databases to determine whether the applicant is mentioned in relation to threat-related activities. Depending on the level or category of security clearance required, security screening can also involve interviewing the applicant's friends, neighbours and employers, consulting with local police, and possibly interviewing the applicant.
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What is the purpose of security screening?
The purpose of security screening is to prevent anyone of security concern from gaining access to sensitive government assets, locations or information, and to prevent non-Canadians who pose security concerns or risks from entering Canada or receiving permanent residence in the country.
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Who must undergo the security screening process?
Federal public service employees, members of the Armed Forces and persons under contract to a government department who, in the performance of their duties, have access to classified government assets or information, as well as people who work at sensitive sites such as airports, the Parliamentary Precinct and nuclear power stations, are required to hold a security clearance. Non-Canadians who apply for permanent residency or refugee status must also undergo security screening. Security assessments fall into the following program categories: Government Screening, Sensitive Sites Screening, Foreign Screening, Immigration and Citizenship Screening, and Refugee Claimant Screening. Read more about security