Dylan Stansfield, of Auckland, whose now-deactivated LinkedIn page listed him as a self-employed financial trader, was photographed by journalists at the event, US television news NBC reported.
Stansfield was also reported to be a guest by the New York Times.
When NBC contacted Stansfield, he lashed out at the news agency.
He told NBC he was “infuriated to have been identified” and that “doxing crypto people put their lives at risk”.
Stansfield responded to the Herald’s request for comment by threatening legal action.