Badly worded. It is impossible to catch this rule violation unless someone from corporation leaks it with screens of private conversation (as otherwise GMs can’t trust it as it might be a harmful attempt to get someone banned as an act of player rivalry).
I know that old noob corp did that,. And if some noob corp did it, chances are that every bigger corporation with structures (for which is this used mostly I think) does it… But it cannot be proven so…