23andMe has - fortunately, and to the best of my knowledge - not done any whole genome sequencing, they have made 'prints' ('Genotypes') that can be used to identify a person, but can't be used to re-sequence the DNA. That said: they do have your samples and there is a chance that they have made full sequences of select samples. But whole genome sequencing is still expensive enough that they would not be able to do this today. But given a few years advances in readers and someone with access to the samples could re-run all of them and obtain full sequences for their whole sample inventory.
Am I right that sequencing the DNA is one thing but manufacturing or copying? that DNA to produce enough to falsify evidence would be much more difficult - in a Gattica type scenario?
