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Understanding Database Reconstruction Attacks on Public Data

With the dramatic improvement in both computer speeds and the efficiency of SAT and other NP-hard solvers in the last decade, DRAs on statistical databases are no longer just a theoretical danger. The vast quantity of data products published by statistical agencies each year may give a determined attacker more than enough information to reconstruct some or all of a target database and breach the privacy of millions of people. Traditional disclosure-avoidance techniques are not designed to protect against this kind of attack.