This is exactly the type of bullshit I'm talking about when I try to stress privacy to people I know and they think I'm a lunatic. Most people don't want to hear what "could" happen, only what has happened in the past.
And they get all Godwin on you when you tell them that IBM hoarded and then processed census data for the Third Reich in exactly the scenario of:
Hand over information to someone you trust (in that case the Govt. of your country who proclaim that they welcome Jews); someone who wants to use it against not you gains control of it via takeover (in that case a bunch of psychotics who will murder you because in 1933 your grandma ticked "Jewish" on the census form).
It isn't far fetched nonsense, it is tried and tested.
What will be really interesting is when they acquire a sample from someone based on a partial match by a family member to one case, then proceed with an unrelated case based on a partial match to that sample!
Hand over information to someone you trust (in that case the Govt. of your country who proclaim that they welcome Jews); someone who wants to use it against not you gains control of it via takeover (in that case a bunch of psychotics who will murder you because in 1933 your grandma ticked "Jewish" on the census form).
It isn't far fetched nonsense, it is tried and tested.
Http://ibmandtheholocaust.com/