How Meta is improving password security and preserving privacy

How Meta is improving password security and preserving privacy

摘要

Meta is developing new privacy-enhancing technologies (PETs) to innovate and solve problems with less data. These technologies enable teams to build and launch privacy-enhanced products in a way that’s verifiable and safeguards user data. Using state-of-the-art cryptographic techniques, we have developed Private Data Lookup (PDL) that allows users to privately query a server-side data set. PDL is based on a secure multiparty computation mechanism called Private Set Intersection, where two parties holding sets can compute the intersection of the two sets without revealing their sets to the counterpart. With PDL, we further ensure that only one party (i.e., Meta users) can see the result, disabling Meta from learning the result of the intersection and thus enhancing the privacy of users’ data.