But amidst the bluster was a perfect example of what I like to call the Politicians' Passive:
It's a masterpiece: not 'I've done something wrong' but 'the code had been found to be breached': that's four verbs in eight words! He's not sorry for what he's done, he's sorry for this mysterious finding that the code had been breached (by whom?). The implication, of course, is that he did nothing wrong. That impression is reinforced by 'not only the substance but the perception that matters': he resigned, he says, because people 'perceived' that he'd sinned, not because he actually had.
So to sum up: giving privileged access to special interest groups (a gruesome crew of arms dealers and pro-Israel lobbyists) without oversight isn't wrong. But being caught is.