Title: Evaluating the Security of Anonymized Big Graph/Structural Data

Abstract:
Nowadays, many computer systems generate structured data (also called
graph data). Graph data spans many different domains, ranging from
online social network data from networks like Facebook to
epidemiological data used to study the spread of infectious diseases.
Graph data is shared regularly for many purposes including academic
research and for business collaborations. Since graph data may be
sensitive, data owners often use various anonymization techniques that
often compromise the resulting utility of the anonymized data. To make
matters worse, there are several state-of-the-art graph data
de-anonymization attacks that have proven successful in recent years. To
date, graph data owners cannot gauge the practical or theoretical
vulnerability of their data, nor can they comprehensively gauge its
utility after anonymization.

In this talk, we first introduce various novel structure-based
de-anonymization attacks on graph data. Subsequently, we study the
theoretical foundation for the success of existing de-anonymization
attacks along with large-scale evaluations on real-world graph data.
Third, we propose, design, and implement SecGraph, a uniform and
open-source Secure Graph data sharing/publishing system. Finally, we
will discuss some future research directions.

Bio:
Shouling Ji is a Research Faculty in the School of Electrical and
Computer Engineering <http://www.ece.gatech.edu/> at Georgia Institute
of Technology <http://www.gatech.edu/>. He received a Ph.D. in
Electrical and Computer Engineering from Georgia Institute of Technology
(2015), a Ph.D. in Computer Science from <http://www.gatech.edu/>Georgia
State University <http://gsu.edu/>(2013), and B.S. (with Honors) and
M.S. degrees both in Computer Science from Heilongjiang University
<http://www.hlju.edu.cn/>. His current research interests include Big
Data Security and Privacy, Differential Privacy, Password Security, and
Data Analytics. He also has interests in Graph Theory and Algorithms,
and Wireless Networks. He is a member of ACM <http://www.acm.org/>, IEEE
<http://www.ieee.org/index.html>, and IEEE COMSOC
<http://www.comsoc.org/> and was the Membership Chair of the IEEE
Student Branch <http://cs.gsu.edu/~ieee/> at Georgia State University
<http://gsu.edu/> (2012-2013). He was a Research Intern at the IBM T. J.
Watson Research Center <http://www.research.ibm.com/labs/watson/>.
Shouling is the recipient of the 2012 Chinese Government Award for
Outstanding Self-Financed Students Abroad.