GUIDE TO DIFFERENTIAL PRIVACY MODIFICATIONS IBD

Sinopse

Shortly after it was ï¬ürst introduced in 2006, diï¬Çerential privacy became the ï¬éagship dataáprivacy deï¬ünition. Since then, numerous variants and extensions were proposed to adapt it toádiï¬Çerent scenarios and attacker models. In this work, we propose a systematic taxonomy ofáthese variants and extensions. We list all data privacy deï¬ünitions based on diï¬Çerential privacy,áand partition them into seven categories, depending on which aspect of the original deï¬ünitionáis modiï¬üed.These categories act like dimensions: Variants from the same category cannot be combined, butávariants from diï¬Çerent categories can be combined to form new deï¬ünitions. We also establisháa partial ordering of relative strength between these notions by summarizing existing results.áFurthermore, we list which of these deï¬ünitions satisfy some desirable properties, like composition, post-processing, and convexity by either providing a novel proof or collecting existingáones.