Hard to decide. Should the white hatters get enough information to deal with a problem at the risk of informing the black hatters something they did not know?

Hard to decide. Should the white hatters get enough information to deal with a problem at the risk of informing the black hatters something they did not know? Or do you assume the black hatters already have access to all the information they want to know, and it is only the white hatters who are left in the dark by hiding information ?