Any journalist worth their salt will let you record the interview as well as any communication. You could also save/forward any of theire-mails. If this happens

Any journalist worth their salt will let you record the interview as well as any communication. You could also save/forward any of theire-mails. If this happens to you make it public/talk to their editors. I'm also skeptical as WSJ and NYT are top-tier publications, and honestly most journalists are highly ethical.