Over the last 2 years I've been gradually welcoming various governments from around the world onto Have I Been Pwned (HIBP) so that they can have full and unfettered access to the list of email addresses on their domains impacted by data breaches. Today, I'm very happy to announce the expansion of this initiative to include the USA government by way of their US Cybersecurity and Infrastructure Security Agency (CISA). CISA now has the ability to query US government domains via API and receive notifications when they're impacted in subsequent data breaches.
Over the coming months I expect to continue expanding the scope of government support in HIBP. For now, it's a big welcome to the USA and I'm enormously happy to see HIBP able to support them in this fashion.