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While I like this work, the title may be misleading to people who think of "privacy loss" as something distinct from "differential privacy". What they show is
by frankmcsherry 9y ago
While I like this work, the title may be misleading to people who think of "privacy loss" as something distinct from "differential privacy".
What they show is that as you use Apple's implementation, the differential privacy parameter grows (providing weaker guarantees as time passes). They don't show that they can bypass the mechanism and it's guarantees, just that Apple has rigged the implementation to decay the guarantees as you continue to use it (note: decay stops if you stop using Apple stuffs).
- ramensea 9y agoThis is a known weakness with differential privacy. Depending on how much noise you inject into your data, your analytics either approach meaninglessness or the privacy decays. The hype machine surrounding Apple did not want to hear this and were just caught up with the idea "Apple could data mine you while maintaining ur privacy".