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Police officers help for free.

If they find during an investigation that you're avictim of a crime they WILL tell you where they found the data and what was exactly in it.

Troy? He'll basically resell you your own stolen data, because that's the only way to know if the password leaked was 20 years or 1 month old, and to what services exactly. If you're leaked in infostealer dump, you'd learn from the police what was associated with your email in this dump, so you know to snort if it was only empty password store from your Firefox, or financial data exposing you to ruin.

Troy? Oh, he can tell you that too, but for a price. He'll sell you your personal data back.

(I've looked far and wide and there doesn't seem to be ANY way to list as much as the domains of the email/password dumps without paying for access to the API)