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Information Security

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    "In theory ID numbers are secret" Is that so in Norway? In Sweden they are public - just walk into a tax office and ask and they will be happy to give you the ID for anyone. Commented Oct 17, 2017 at 11:37
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    @Anders Are you sure? Commented Oct 17, 2017 at 14:19
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    @Anders I used to live in Sweden, and I've certainly found people protective (but not hyper-protective) over their personnummer, with leaks making the news. Commented Oct 17, 2017 at 14:31
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    I just looked this up on Norwegian and Swedish Wikipedia, and this is different in Sweden and Norway. In Sweden these numbers are public information, In Norway, they are supposedly secret. I think Sweden has the right of it, keeping these secret is simply too hard. Commented Oct 18, 2017 at 8:04
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    @DavidRicherby No, no need to lie. Just say "I'd like the ID number of Stefan Löven, please." and they will happily give you the ID of the prime minister. Besides, it's just a function of your date of birth, gender, place of birth plus a counter so theres very little entropy in it anyway. Keeping it secret is absolutely pointless. Commented Oct 18, 2017 at 8:08