[daddylonglegs]

> "I'd imagine the major intelligence agencies have already started their own genetic databases, right?"

> The gig is up.

Absolutely. Also the Pentagon has another excellent source: It stores DNA fingerprinting for US armed forces personnel (so as to identify the remains of MIA/ KIA soldiers). If you could get your hands on that it would probably help fill in the family trees of people involved in intelligence work - I think it is fairly common for extended families to have lots of people working in defence and intelligence.

Presumably the Chinese can combine the family trees from these DNA databases with information from scraping Facebook/ LinkedIn etc and data from the Office of Personnel Management breach. IMO they should be able to connect DNA samples to people in the US very effectively, the DNA will map to a person or a few people and the Chinese will know the work - including intelligence work for the US government - that those people do. So, for example, if they pick a suspicious USB key or document they can take the skin cells of those who handled the object and identify them.