This doesn&#x27;t sound very anonymous... for one - he&#x27;s giving them his DNA. Unless he has an identical twin that&#x27;s fairly unique. Secondly, an adversary can guess he&#x27;s an abine employee or knows one. That narrows the search space considerably.<p>Whenever you donate DNA to a large DNA aggregating project, you can be fairly trivially re-identified via a few ways. Even if you control all the other information, if a relative contributes DNA, your match will be close enough to narrow it down to a few relatives (including you). The FBI has famously used this technique to find serial killers and identify seriously messed up paternity.<p>If it were me, I&#x27;d get the NIH Confidentiality Certificate. At least you have legal protections then.