zlacker

[return to "Algorithm can pick out almost any American in supposedly anonymized databases"]
1. pfortu+z6[view] [source] 2019-07-24 11:02:51
>>zoobab+(OP)
In any database whose fields have at least 4 meaningful ranges, 16 fields give 4.000.000.000 possibilities. Now I am on my iphone. As long as ranges are meaningful (i.e. they do divide the group in somewhat even parts), the individuating possibilities are HUGE. And fields do have usually many more than 4 ranges.

Anonymizing datasets is a weasel term.

The database is secure or it is not. As any database is quite likely insecure, we are doomed.

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2. jobigo+4w[view] [source] 2019-07-24 14:17:42
>>pfortu+z6
An anonymized version would be one where you have a tally for each value/category in each field, without any correlating table between the fields. Only store the histograms.
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3. pfortu+5C[view] [source] 2019-07-24 14:55:55
>>jobigo+4w
Well, yes, but then that is not what advertisers want... That is the thing.

Whenever a large enough database exists with individual data, we are doomed.

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