This tool exists so people can find their own exposed data and get it removed. Using it on someone else's identifiers is the exact harm it was built against.
Find where your own data is showing up — then go shut it down.
Breach data from XposedOrNot and Have I Been Pwned. Account results come from each platform's own public API. Passwords are checked by hash prefix — what you type never leaves your device in readable form. A clean result means nothing has been catalogued yet, not that you're safe.