[skolor]

I would imagine it's at least somewhat rare. The indicators for espionage and insider trading are quite similar: most spies are caught because of sudden affluence. Making a ton of money off insider trading is going to set off a lot of red flags and likely trigger an investigation.

[mark212]

tell that to Aldrich Ames. His coworkers reported him in 1989 for living a life of affluence (if I recall right, he bought a brand new Jaguar and actually drove it to CIA headquarters, even though he wasn't making more than $65k a year or thereabouts). But he wasn't arrested until 1994.

[mahyarm]

So if he practiced stealth wealth like many wealthy americans do, he would be less likely to be caught?!