A new paper about mining search engines for facebook data shows that user's ignorance and poorly designed privacy control can reveal lots of information about the users.
The researchers used a kind of social graphs that revealed some interesting information such as:
- Finding the most popular users in a network
- Cluster the users into highly-connected subgroups
This information can be use by marketers to target a small set of users with high influence to reach the entire network.
And if an attacker can compromise a small dominating set, he can reach out to the whole network.
They have found that compromising 10% of the users, can lead to compromise more than 50% of messages in that network.