"Anyone can cobble together a website with some APIs and load in a ton of data breaches, but establishing trust is a whole different story. Trust in the way I run the service is an absolutely pivotal part of HIBP and it's something I built organically rather than setting out to earn it, now here I was with big companies putting a value on it."
Yeah, so it's nothing but branding. There is nothing about this site that requires trust, since the data is already available. HIBP got popular on Twitter / the internet and is now a well known name in cyber.
"Anyone can cobble together a website with some APIs and load in a ton of data breaches, but establishing trust is a whole different story. Trust in the way I run the service is an absolutely pivotal part of HIBP and it's something I built organically rather than setting out to earn it, now here I was with big companies putting a value on it."