Individuals are more likely to want to commit espionage when they have money troubles. Why not hire only the already-wealthy?

Individuals are more likely to want to commit espionage when they are tempted with sex. Why not demand evidence of membership in closed religious communities to address that?

On the former, that's absolutely a thing with all sorts of levels to it. Base level is that most companies run background checks including a credit pull. Next level is use of elite academic credentialing, i.e., "we only like to hire from ___".

On the latter, because lol that is not going to have the effect you're looking for.

On the former, I'm quite aware of that. What I'm not aware of is this sort of loyalty screening for low-level employees, as suggested.

On the latter, you're getting closer to the point I'm making.

> Next level is use of elite academic credentialing, i.e., "we only like to hire from ___".

And that's how you get numbered groups like the Cambridge Five