If you get a job that requires a security clearance (secret, top secret etc) you have to go through and list everywhere you've lived for 5+ years, one person you knew at each residence, like 3 relatives, a few friends,
Financial information ... and a partridge in a pear tree... NOT a fun thing to fill out

... however, part of the theory is if you're in deep financialtrouble .... you maybe more apt to 'sell off' information to competitors or in gov't positions... to other countries