"The KGB had plenty of women that were willing to do anything for "Mother Russia"."
Yep, Anna Chapman even went so far as becoming a realtor, *shudder*.

Many nations intelligence services still use honey-pots, indeed only a couple of weeks ago a Rabbi ruled it was okay for the Israeli intelligence services to do this. Israel & Russia (nee USSR) may have excelled at it for decades, but even the various Western European & North American agencies aren't too averse to a technique that's been proven time & again to work very effectively.

"Coercion" or "compromise" usually, rather than conscience, which would tend to fall under ideology, whereas coercion is primarily blackmail/initmidation/etc