We are pleased to welcome Prof. Benjamin Nguyen from LIFO (Laboratoire d’Informatique Fondamentale d’Orléans) lab and INSA Centre Val de Loire.

He will give a talk entitled « DARC : Data Anonymization and Reidentification Challenge » on November, 18 in Lyon.

Where: Campus de la Doua, bâtiment Nautibus, salle visioconférence au rez-de-chaussée
When: November, 18 at 15h30-16h30

Abstract
Anonymization is a way of protection personnal data, which has been more clearly specified by the EU General Data Protection Regulation (GDPR). The Data Anonymization and Re-identification Challenge (DARC) goal is to approach the task of data anonymization experimentally, as a competition. The challenge is built into two phases : first an anonymization task, where participants seek to anonymize data, while maintaining utility, which is measured by data and application specific metrics. In the second phase, all participants attempt to reidentify the anonymized submissions of the other participants, with a given background knowledge hypothesis on the attackers. The challenge has been proposed to several groups of students from INSA CVL and INSA Lyon in 2019 and 2020, and organized at a national level in France in 2021 (approx 20 participants divided into 4 teams). In this presentation, we will present the competition platform architecture, discuss some of the issues linked to organising such a competition, and present some results (both in terms of anonymization and re-indentification).

Keywords: Anonymization, re-identification, competition

Bio
Benjamin Nguyen graduated from ENS Cachan in 2000. He obtained his Ph.D from University of Paris Sud in 2003 on data warehousing, and his HDR from University of Versailles in 2013 on privacy preserving data mangement. Since 2014, he holds a professor position in the Systems and Data Security team of the Laboratoire d’Informatique Fondamentale d’Orléans (LIFO), at INSA Centre Val de Loire and is an external collaborator of the Inria Private and Trusted Cloud (PETRUS) team. His current research topics cover anonymization techniques, models and methods to represent, quantify and enforce privacy models (such as logics, secure hardware and cryptography), and the design and implementation of large scale privacy-by-design information management systems. Pr. Nguyen is head of LIFO since 2016, and co-chair of the Privacy Working group of the CNRS research group on Computer Security since 2016.