For reference, one of the first things I was taught as a software engineer working in a highly secure industry long ago was that we should take psychological manipulation/seduction very seriously to avoid damaging the company and leaking national secrets. If I did something like this I would've lost my job at minimum and likely faced severe legal action.

Regardless of how much you think we can or cannot resist actions from a foreign nation state, the ultimate fact of the matter is that he failed and thus is no longer suited for his position. If I would face worse consequences for such an action, then I damn well expect someone who's paid far above my pay grade to represent a company to face some consequences as well.