A nation state (whose population’s ethnicity is mostly one and the same) undertakes a massive and state sponsored campaign of corporate and military espionage,

A nation state (whose population’s ethnicity is mostly one and the same) undertakes a massive and state sponsored campaign of corporate and military espionage, predominantly via the theft of secrets. They get caught numerous times red handed, and in most cases the thefts are perpetrated by people of the ethnicity of that state actor. You decide that you don’t want to be a victim of such an attack - using the ethnicity of that sate actor as heuristic for likelihood to commit that theft is pretty rational - despite the fact that the actual odds of being a vicitim might be quite low (unless you make aircraft engines, Aircraft carriers, or any thing else high on their “shopping list”). The point being if the likelihood that the average employee is a spy is 10^-7 and one of the of state actor’s ethnicity is 10^-6, on an individual basis it is essentially useless in making decisions about individuals but I know where I would spend my time if I was head of corporate security...