The Golden State Killer was in part caught by using a public access genealogy site. The particular site warns users that the access is public and free, to use at their own risk.

My question is, should private sites have any obligation to provide data to aid in police investigations? The two sites I read that have statements both said they would protect the privacy as best they could and data would only be released given proper legal obligations (like a warrant).

Bonus Question: if you used a DNA site would you want your information made available to help catch a criminal who would be close relative? Should you have the option to choose to share info with police when you sign up?