Leakage and Linkage
The range and diversity of interactions among users across multiple OSNs, the Web, and the external applications ecosystem have expanded dramatically. Concerns about privacy leakage have grown as well. Users must manage their privacy without fully understanding the breadth of their exposure. The complexity of potential flows of information and the consequences of actions over time are too vast to envisage a coherent protection mechanism. However, we can trace the discoveries of leakage over multiple axes: across time, passive leakage via regular OSNs and their mobile counterparts, and inference through active mining.