A lot of the "breaches" added to the site are from unknown origins. Like, a large mixed collection sold online that somehow found it's way to Troy. Last time

A lot of the "breaches" added to the site are from unknown origins. Like, a large mixed collection sold online that somehow found it's way to Troy. Last time I used HIBP, it told me what site the leak was from. If your password shows up at all, you should change it wherever you use it.