The way to counteract it is to build loyalty inmproving buildings in your provinces (town watch, religious buildings, brothel, watch towers, border fort.) and place a spy in each province. Keep a garrison of not less than 100 men in each province also, the cheaper to support the better. Also you'll want to lower taxes in those problem provinces to get the loyalty to 120% or above. Anything below this and a faction re-emergence can occur.

I did not know this. Thank you!!!!!!!!!!!