Don’t let techbros with a snazzy website template do a middle-man act on whistleblowing. Christ. These people just want a cut of the settlement.
I mean, this idea is profoundly dangerous. Every link in a whistleblowing chain increases the risk of someone being threatened, ruined or worse — hospitalised, defenestrated, family threatened -- before they can talk.
If you are going to blow the whistle, be paranoid as fuck. Ask the journalists to describe what assurances they get from their editor and publisher. Ask them to put you in touch with someone who blew the whistle to them and who can safely talk, so you can find out how they handled it. Ask them if they've ever had to help someone get the hell out of Dodge. Don't trust anyone to broker this stuff but yourself.