I don't know. You? His version of events, if true, is revealing enough. It takes a lot of nerve to do what he did, is he that brash, or did he feel secure? In any case, falsifying your identity to rewrite Wikipedia entries favorably to oneself and unfavorably to one's enemies is unethical enough that he might get recruited.
Some of the things Hari has written over the years have given me pause, this is giving me some more pause. Western intelligence has infiltrated the media to such a degree now that even the left is riven with spooks.
Anyway, shill or no, what he obviously isn't is a journalist.
http://www.independent.co.uk/opinion/commentators/johann-hari/johann-hari-a-personal-apology-2354679.html