I am author of that work and your summary of it is not correct.
If you refer to Discouraging Abusive Behavior in Privacy-Preserving Online Social Networking, it appeared in the Proceedings of the 23rd International Conference on World Wide Web. Web. 25 Apr. 2016.
Your reference is wrong and also your additions referring to the term “hacker” as malicious in this very same paragraph, which the article does not contain a.f.a.i.k.