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Cloud

Can Translucency Save Privacy In the Cloud? 86

MikeatWired writes "Jon Udell writes that when it was recently discovered that some iPhone apps were uploading users' contacts to the cloud, one proposed remedy was to modify iOS to require explicit user approval. But in one typical scenario that's not a choice a user should have to make. A social service that uses contacts to find which of a new user's friends are already members doesn't need cleartext email addresses. If I upload hashes of my contacts, and you upload hashes of yours, the service can match hashes without knowing the email addresses from which they're derived. In the post Hashing for privacy in social apps, Matt Gemmell shows how it can be done." (Read more, below.)

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