Worked for a well-funded high-profile company years ago. The HR people were constantly getting calls from recruiters who wanted to work for us.

HR person would say "Thanks for calling! We're having a really hard time finding Black Box developers. Can you get me some Black Box developers?"

The only way to be considered by the company was to answer along the lines of "Black Box? Never heard of that."

Many recruiters utterly failed to proceed any further than this point.