πBox: A Platform for Privacy-Preserving Apps
summary
πBox provides a prototype platform that confines each app in an extended sandbox spanning device and cloud, exposes a private vault plus a read-only shared content store, and implements aggregate channel counters using differential privacy and a sharing channel that forces user-confirmed recipients. It classifies apps as green/yellow/red by mechanism and reports that about 74% of surveyed free apps and 67% of paid apps can be secured at least to the yellow level, with modest client changes and measurable server overhead.
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chapters (11)
- 0:00Introduction to πBox and privacy
- 2:38Trust shift in πBox
- 4:03App confinement in πBox
- 6:14Aggregate channel and differential privacy
- 9:07Sharing channel and user data sharing
- 11:00Privacy guarantees and app categorization
- 13:10πBox applicability and overhead
- 16:04Q&A: User burden and covert channels
- 18:11Q&A: Covert channel defenses
- 19:37Q&A: Social network privacy in aggregation
- 23:12Closing remarks
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