https://web.archive.org/web/20020428094626/http://www.wired....
Indians are most at risk of genetic exploitation. Hiring managers won't need to ask annoying probing questions about your family to sniff out your lineage if they can just look up your DNA profile to see what caste you belong to.
And Jews were self identifying and dna isn't going to tell you if you are gay or not.
Ethnicity can be easier discovered through last name, visual clues rather then stolen hacker data.
The fears are similar to fears around your commodore 64 accidently logging into a war games scenario and destroying the world.
Most people in Russia who identify as Jewish and/or emigrated to Israel have non-Jewish last names. You really would never know if they didn't file the paperwork.
Wouldn't they use the citizenship data they have from the last 100 years? If they used 23andme data wouldn't they have floods of people from US, Canada, Australia, who could claim a new citizenship?