Oddbean new post about login | logout The cops can use your DNA to perform a genealogical search to find their suspect by linking them to familial DNA in the databases of these DNA services. If you submit your DNA for these cute evaluations, you're potentially ratting out family members who might be on the wrong side of the law.
The wrong side of the law, the wrong place at the wrong time, or just work in a lab with careless colleagues. Good f--king luck explaining that one to a judge after the prosecutor has already spun a truthy little narrative to the court.
Or isolating yourself as genetically disposed to violence or.. ambition that makes you a "political risk". Seems like a great way to id yourself as a dissident.