There is an interesting article by Stuart Leavenworth in the Herald.net web site:
“Familial searches led California authorities to arrest Joseph James DeAngelo in the Golden State Killer probe in April, and investigators have since used it to make breakthroughs in several other unsolved murder cases, including four in Washington state, Pennsylvania, Texas and North Carolina.
“But as these searches proliferate, they are raising concerns about police engagement in “DNA dragnets” and “genetic stop and frisk” techniques. And as public DNA databases grow and are accessed by law enforcement, investigators may soon have the ability to track down nearly anyone, even people who never submitted their genetic material for analysis.
“’If you are a privacy zealot, this is super alarming. It means you don’t have any privacy,’ said Malia Fullerton, a bioethics specialist and professor at the University of Washington. ‘On the other hand, if you have no problem with police using your family information to solve these cold cases, you might see this as a good thing.’”