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According to the Technical Dictionary of Dianetics and Scientology, security checking has the purpose of “remedying the compulsion or obsession to commit actions which” the person then feels must be kept secret. They are given to all Scientologists on the Bridge, every six months to all OTs, according to officials, “to make sure they’re using the tech correctly”, and to members who are leaving staff.

Whole Track Security Check
This long Sec Check, consisting of hundreds of questions, takes stock of the subject’s entire time track, including all their past lives. It includes questions such as:

Did you come to Earth for evil purposes?
Have you ever smothered a baby?
Have you ever enslaved a population?
Have you ever destroyed a culture?
Have you ever torn out someone’s tongue?
Have you ever zapped anyone?
Have you ever eaten a human body?
Have you ever made a planet, or nation, radioactive?