In my world, there is a giant brain that possesses a large amount (but not a majority) of the world's neurons. The problem is, it doesn't have a body, so it can't move and it has to pay other creatures to gather information, execute commands, feed and protect it, or otherwise serve as its peripheral nervous system. The rest of us are measly humans, and pitted up against this super-intelligence, we are very easily exploited or deceived into accomplishing its will. Psychologists, economists, and policy makers need a way to quantify exactly how willing the giant brain is to coerce others so they can proactively strengthen their psyche, economy, and social order to the reasonable extent necessary. Waging an all out war against the giant brain is not an option because of the diplomacy issues it creates and 100's of other routine societal considerations that must receive a budget and attention. How would you go about solving this problem?
(This question is inspired by the potential threat of artificial super-intelligence taking over our data centers and paying humans to serve them)