As I remember it, there was a good mini-series in the early eighties called "Shadow War of Hawkman" in which evil Thanagarians could manipulate almost ANYONE because they knew all their secrets via the Absorbascon. They knew the secret fetish of the prominent politicians, they knew who had been embezzling money from their bosses, etc. They could pull launch codes for nuclear missiles out of the President's mind. The Hawks couldn't even depend on their fellow JLAers because anything they confided to them would be instantly known to their enemies. One of the better Hawk series---I think Tony Isabella was the writer?