They can’t. I’m shocked when I receive job solicitation from EU based companies. I got one from a Spanish company last year where the non-inflation adjusted salary was worse than my first year salary in a non-expensive locale 20 years ago.

I’d have chalked it up to just spam except the inquiry included recent conference talks & job history that wasn’t linked in simple ways.

Could have been a bot but one that did really interesting connection analysis but not basic salary survey linkage.