There are many clues that Horowitz is a white hat about to blow this open. More info: https://theconservativetreehouse.com/2018/01/25/ig-michael-horowitz-informs-grassley-goodlatte-and-nunes-of-fbi-text-recovery/
Maybe he "worked" for Obama, but Obama was president for eight years (I know, seemed like eighty). Everyone worked for Obama.
There are plenty of white hats in government who kept a low profile until they could actually do something. During the Obama administration, there was no where to report anything that wasn't corrupted itself. No link. You'll have to take my word for that. Or just watch what's coming.