Since October 2017, I am a CNRS researcher in the SLIDE team at LIG, Grenoble.

Prior to this I was a postdoc at the Max Planck Institute for Software Systems working with Krishna Gummadi. I obtained my PhD in 2014 and my Master degree in 2010 from the Pierre et Marie Curie University in Paris. During my PhD I worked under the supervision of Renata Teixeira. I am originally from Romania, where I obtained an Engineer diploma in Computer Science from Technical University of Cluj-Napoca in 2008.

If you want to understand how you are targeted by advertisers on Facebook, or what data Facebook has inferred about you, install our tool AdAnalyst!

I am looking for motivated interns and PhD students. If you are interested in working in security and privacy problems related to social computing and online advertising drop me an email with a brief statement of interest and a CV.


Nov. 6 2018 Our paper was accepted to NDSS'19! Great job Thanos and Marcio!
Oct. 23 2018 Our paper was accepted to FAT*'19! Congrats everyone!
July 27 2018 I will be in matternity leave until the end of the year, we are expecting our second boy! I will probably be more than fashionably late answering emails.
Feb. 07 2018 If you are worried by the NYTimes Follower Factory articles and you are afraid you might have been impersonated check our service to detect impersonation attacks: http://impersonation.mpi-sws.org/!
Jan. 07 2018 WIRED ran an article on our attacks discovered in the S&P paper.
Dec. 27 2017 We have a IEEE S&P paper! Congrats Giri and Thanos!
Oct. 26 2017 We have a NDSS paper! Congrats Thanos and Giri!
Oct. 3 2017 I have three internship propositions:
July 7 2017 My project PRoTect was funded by the ANR in the JCJC program. I am looking for motivated interns and PhD students!
July 2016 Starting October 2017 I will be a permanent CNRS researcher in the LIG lab in Grenoble.
June 9 2016 Patrick Loiseau (EURECOM) and I have been awarded a research grant from the Data Transparency lab for our project “TranspAd: A Collaborative Tool to Bring Transparency to Targeted Advertising”.

Research Interests

I am broadly interested in security and privacy aspects of social computing systems (online systems that provide services to people and that have at their core the data produced by them: Twitter, Amazon, Netflix). In my projects I try to understand problems in current systems trough data collection and data mining (measurement and analysis) and propose better solutions (systems design and implementation, data mining algorithms).

My research is motivated by the fact that most people use on a daily basis different social computing systems to perform numerous activities. While the value of these systems is undeniably attested by their global scale adoption, they also bring new challenges and threats for users. My current research projects focus on the following three aspects:

  • Privacy: measure and control the image users leave online (e.g., what data a potential employer could mine about me online?)
  • Transparency: understand the consequences of users's actions on the services they receive (e.g., why am I being targeted with this particular ad?)
  • Trust: estimate the trustworthiness of users and content online (e.g., is this review fake or real?)




Doctoral students


AdAnalyst A tool that provided aggregate statistics about the ads a user receives on Facebook

IdentityImpersonation A tool that allows users to check whether they are impersonated on Twitter


    PC Co-chair: WWW 2015 PhD Symposium
    PC Member: APVP (2017), WebSci (2017, 2016), IEEE TrustCom (2016), SIMPLEX (2015)
    Award Committee: Data Transparency Lab - DTL 2017
    Reviewer: Elsevier Online Social Networks and Media, IEEE Transactions on Multimedia, IEEE/ACM Trans- actions on Networking, ACM Transactions on the Web, Communications of the ACM, IEEE Transactions on Knowledge and Data Engineering
    External reviewer: AAAI (2017), FC (2015), Euro S&P (2015), INFOCOM (2013), NDSS (2013), S&P (2013)

Open Positions


Patrick Loiseau is my wonderful husband. I am very lucky that we can work together and do science over a glass of wine.
Update 1: ... after our son goes to bed .
Update 2: This statement is no longer true ... we just crash!