The main secret is that Russia doesn’t have that many really “secret agents”.

They have “ambassador agents” being ignorant of whose identity is better for you, but that identity is not secret in any way.

Just if you are a plebe taking interest, they might simply kill you and the police won’t do anything. Or invent something better, gaslighting Stasi-style, if killing is too boring for them.

Musk and Thiel are not the type.