That's assuming again that my relative accept to share. That's not what I'm talking about. I'm talking about the direct result. In this case, the relative of the killer never agreed to share the data with the police.
> the relative of the killer never agreed to share the data with the police
Not with the police, but they let people who find a related DNA to find them (this is a feature of these websites). Once the police have your DNA, then can find your relatives. You can't control whether your relatives are opted in to this feature or not.
