Location Privacy Protection Game against Adversary through Multi-user Cooperative Obfuscation. (arXiv:2304.10477v1 [cs.CR])

In location-based services(LBSs), it is promising for users to crowdsource
and share their Point-of-Interest(PoI) information with each other in a common
cache to reduce query frequency and preserve location privacy. Yet most studies
on multi-user privacy preservation overlook the opportunity of leveraging their
service flexibility. This paper is the first to study multiple users' strategic
cooperation against an adversary's optimal inference attack, by leveraging
mutual service flexibility. We formulate the multi-user privacy cooperation
against the adversary as a max-min adversarial …

adversarial adversary attack cache cooperation game information interest location location privacy obfuscation opportunity point preservation privacy program protection query service services share strategic studies study user privacy