I am looking for a word, or name of a concept, that describes a secret that
- is kept from one group of people, e.g. a society (outsiders),
- is known by a specific group of other people, e.g. journalists (insiders), and
- that greatly affects what outsiders know about the topic, and affects how insiders discuss the topic.
Let us say the prime minister of your country is a single man of 40. Society knows nothing of this man's personal life, but journalists know for a fact that he is ragingly asexual*. They never publish this, however, because of some reason (reputation, respect).
This will have an effect on what the journalists write about this person. They will write little or nothing about his personal life, and in cases concerning asexuality avoid requesting a comment from him at all.
Society will only know the fact that little is known about his personal life and his stance on asexuality. It will seem odd to them, at least the critical ones, why so little is known – or rather, why his personal life is not used to gather votes.
Is there a term for this other than secret? It seems to me that it has more weight than a mere secret. It could, in this case, affect a whole society.
* I have nothing against asexuality, nor should there be anything unusual about it, but in the contemporary society it could be pivotal to elections etc.