Government
That's why we should insist that only government should collect such sensitive data to guarantee it will never be leaked.
Future government also totally wouldn't want to slice and dice the data to find groups of people to pick on.
A cybercriminal claims they've uploaded a second batch of stolen profile data from biotech company 23andMe, posting it to the same cybercrime forum that hosted the first batch two weeks ago. The individual who uses the alias "Golem" has uploaded an additional 4.1 million records of mainly UK users in what appears to be another …
Yes, this is one of those moments when I miss Orlowski. IIRC he was fond of disparaging 23andMe's particular brand of snake oil.
(Yes, DNA analysis is a real thing. But from what I've seen, 23andMe make all sorts of unverifiable claims based on the samples people send in. And even if I trusted their reports, there's no way I'd hand them that kind of information.)