slash-sa writes "The European Parliament is currently involved in a wrangle over the new General Data Protection Regulation. At stake are the future rules for online privacy, data mining, big data, governmental spying (by proxy), to name a few. Hundreds of amendments and proposals are on the table, including some that speak of relaxing the rules on sharing data that has been “anonymised” (had identifying information removed) or “pseudonymised” (had identifiers replaced with pseudonyms). This is, however, a very difficult business, with researchers showing how relatively simple techniques can be used to re-identify the data in large anonymised data sets, by picking out the elements of each record that make them unique."
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