I just had a flight of fancy; a russian intelligence agent who is worn out and somewhat cynical. I suspect most whistleblowers would probably prefer not to have a "codename", but it brought back memories of books I read when younger; and the name "Smileskiy" came to mind. Maybe the name might raise a sardonic chuckle to its new owner.
It was sent to a contact who then published it on their behalf. They were operating as a whistleblower, as I understand it.