Something akin to haveibeenpwned.com password hash partial match? Can that even be done with this data?

Edit: You goofs know you can calculate the hash locally and submit it for review without actually exposing your password to them right? That's how bitwarden does it's check. https://www.troyhunt.com/ive-just-launched-pwned-passwords-version-2/#cloudflareprivacyandkanonymity

Ah, but Mozilla isn't even trying to do anything cool like that. They just use onereap and those fuckers look shady. Quotes from their privacy policy: https://onerep.com/privacy-policy#what-data-we-collect-and-how-we-do-that

We use your Personal Information for a number of purposes, which may include the following:

[snip]

• To display advertisements to you.
• To manage our Affiliate marketing program.

There will be times when we may need to disclose your Personal Information to third parties. We may disclose your Personal Information to:

[snip]

• Third-party service providers and partners who assist us in the provision of the Services and Website, for example, (a) those who support delivery of or provide certain features in connection with the Services and Website (e.g. Stripe, a payment services provider; Sendgrid, an email delivery service; HubSpot, a CRM platform, and Sentry, a crash reporting platform); (b) providers of analytics and measurement services (e.g. Google Analytics, ProfitWell etc.); (c) providers of technical infrastructure services (e.g. Microsoft Azure, Google Cloud, and Amazon AWS); (d) providers of customer support services (e.g. Zendesk); (e) those who facilitate conduct of surveys (e.g. Hotjar); (f) those who help to advertise, market or promote our Services and Website (e.g. Mautic, Facebook Ads, Google Ads, Linkedin Ads, Reddit Ads, and Microsoft Ads);

The bastards