positive vetting
noun/ˌpɒzətɪv ˈvetɪŋ/
/ˌpɑːzətɪv ˈvetɪŋ/
[uncountable, countable] (British English)- the process of checking everything about a person’s background and character when they apply for a job in which they will have to deal with secret information, especially in the civil service
道德审查（对申请从事保密工作者的背景和品行进行检查）