You know, I wonder if it's possible to create an (informal) information sharing agreement with another faction. Not for the kind of information high level infiltration would get you, of course. But sharing some of your intelligence work with each other in a way that doesn't endanger ones own agents could be beneficial to both sides.
Right now, the optimal partner would be Olympia, of course. Their lack of infosec and stability means they can't be trusted with too much, but still. They could use the help, and another set of eyes would be useful for us.
Xanatos would also make sense in the future. He could be trusted not to have leaks on his side, and sharing (selected) information freely would reduce the incentive to infiltrate.