[austinjp]

Never heard of LogDog, looks very interesting, thanks. Are you planning a web-only service, or must it be a native app? Some relatives of mine don't have smartphones but do use plenty of online services.

Are there other web-based services people here can recommend? Haveibeenpwned is great of course, but the horse has left the stable by that point, something that sniffs out suspicious activity before trouble occurs would be great.

[sep]

Nothing immediate regarding a web-only service, sorry, but it obviously makes sense to expand the service in that direction.

HIBP is indeed great and you can actually subscribe via email to get real time alerts. It's limited to credentials exposed via dumps.