Have Spies Always Been Punished?

We've got a question here about punishment, from agro by, a diversan twitter. Have spies always been punished, especially harshly when caught? Which i guess we could broaden out to talk more broadly, about the ramifications for spies who are uncovered. And er, it poses lots. I mean, two elements this. One one is the punishment, absolutely. And the other one is the sort of a moral dilemma of this.