Re: [private-measurement] Strawman: Target privacy constraints (#17)

"Cannot be linked to a specific individual" is not enough. Any widely available system will be used by adversaries to carry out attacks on users ([Microtargeting as Information Warfare](https://cyberdefensereview.army.mil/CDR-Content/Articles/Article-View/Article/2537110/microtargeting-as-information-warfare/)) not just by legit advertisers making win-win offers.

Group size will have to depend on adversary's capabilities and goals. Instead of "cannot be linked", the (fraction of targeted users in the group) * (cost of attacking one target) needs to be lower than whatever value the adversary places on a successful attack.

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Received on Monday, 27 June 2022 20:17:07 UTC