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Publications Committees Events organized Posters Talks Projects Reports Students Events attended

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Publications

1. Two tales of privacy in online social networks. Seda Gürses and Claudia Diaz. In IEEE Security & Privacy Magazine Vol. 11(3):29-37, Special Issue on Social Networks, May/June 2013. 
2. Towards Measuring Resilience in Anonymous Communication Networks. Fatemeh Shirazi, Claudia Diaz, Ciaran Mullan, Joss Wright, and Johannes Buchmann. In 6th Hot Topics in Privacy Enhancing Technologies (HotPETs 2013), 9 pages, 2013.
   
3. OB-PWS: Obfuscation-Based Private Web Search. Ero Balsa, Carmela Troncoso, and Claudia Diaz. In IEEE Symposium on Security and Privacy (S&P 2012) SoK, IEEE,  pp. 491-505, 2012. [Acceptance rate 13%, 40/307]
4. A Metric to Evaluate Interaction Obfuscation in Online Social Networks. Ero Balsa, Carmela Troncoso, and Claudia Diaz. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems (IJUFKS), Vol. 20, No. 6, pages 877-892, 2012.
   
5. On the Measurement of Privacy as an Attacker’s Estimation Error. David Rebollo-Monedero, Javier Parra-Arnau, Claudia Diaz, and Jordi Forné. In International Journal of Information Security (IJIS), volume 12, number 2, pages 129-149, 2012
   
6. Hero or Villain: The Data Controller in Privacy Law and Technologies. Claudia Diaz, Omer Tene, and Seda Gürses. Abstract presented at the Ohio State Law Journal Symposium "The Second Wave of Global Privacy Protection", 4 pages, 2012.
   
7. Understanding the landscape of privacy technologies. Claudia Diaz and Seda Gürses. Extended abstract of invited talk in proceedings of the Information Security Summit, pp. 58-63, 2012.
   
8. On the difficulty of achieving anonymity for Vehicle-2-X communication. Carmela Troncoso, Enrique Costa-Montenegro, Claudia Diaz, and Stefan Schiffner. In Computer Networks, Special Issue on Deploying Vehicle-2-x Communication, volume 55, issue 14, pp. 3199-3210, 2011.
   
9. Engineering Privacy by Design. Seda Gürses, Carmela Troncoso, and Claudia Diaz. In Conference on Computers, Privacy & Data Protection (CPDP 2011), 25 pages (pre-print), 2011. [Acceptance rate 26%, 14/52]
10. Systems for Anonymous Communication. George Danezis, Claudia Diaz, and Paul Syverson. In CRC Handbook of Financial Cryptography and Security, CRC Cryptography and Network Security Series, B. Rosenberg, and D. Stinson (Eds.), Chapman & Hall, pp. 341-390, 2010
11. Unraveling an Old Cloak: k-anonymity for Location Privacy. Reza Shokri, Carmela Troncoso, Claudia Diaz, Julien Freudiger, and Jean-Pierre Hubaux. In Proceedings of the 9th ACM workshop on Privacy in the electronic society (WPES 2010), K. Frikken (ed.), ACM, pp. 115-118, 2010. [Acceptance rate 31%, 15/48]
    
12. Impact of Network Topology on Anonymity and Overhead in Low-Latency Anonymity Networks. Claudia Diaz, Steven J. Murdoch, and Carmela Troncoso. In Proceedings of the 10th Privacy Enhancing Technologies Symposium (PETS 2010), M. Atallah and N. Hopper (Eds), Springer LNCS 6205, pp. 184-201, 2010. [Acceptance rate 28%, 16/57]
    
13. Drac: An Architecture for Anonymous Low-Volume Communications. George Danezis, Claudia Diaz, Carmela Troncoso, and Ben Laurie. In Proceedings of the 10th Privacy Enhancing Technologies Symposium (PETS 2010), M. Atallah and N. Hopper (Eds), Springer LNCS 6205, pp. 202-219, 2010. [Acceptance rate 28%, 16/57]
    
14. The wisdom of Crowds: attacks and optimal constructions. George Danezis, Claudia Diaz, Emilia Käsper, and Carmela Troncoso. In Procceedings of the 14th European Symposium on Research in Computer Security (ESORICS 2009), M. Backes and P. Ning (Eds), Springer LNCS 5789, pp. 406-423, 2009. [Acceptance rate 19%, 42/220]
15. Privacy-Enabling Social Networking over Untrusted Networks. Jonathan Anderson, Claudia Diaz, Joseph Bonneau, and Frank Stajano. In Proceedings of the 2nd ACM Workshop on Online Social Networks (WOSN 2009), pp. 1-6, 2009. [Acceptance rate 35%, 11/31]
16. Privacy Preserving Electronic Petitions. Claudia Diaz, Eleni Kosta, Hannelore Dekeyser, Markulf Kohlweiss, and Girma Nigusse. In Journal of Identity in the Information Society (IDIS), vol. 1, pp. 203-219, 2009.
17. A Framework for the Analysis of Mix-Based Steganographic File Systems. Claudia Diaz, Carmela Troncoso and Bart Preneel. In 13th European Symposium on Research in Computer Security (ESORICS 2008), S. Jajodia, and J. Lopez (Eds), Springer LNCS 5283, pp. 428-445, 2008. [Acceptance rate 22%, 37/168]
18. Revisiting A Combinatorial Approach Toward Measuring Anonymity. Benedikt Gierlichs, Carmela Troncoso, Claudia Diaz, Bart Preneel, and Ingrid Verbauwhede, In Workshop on Privacy in the Electronic Society (WPES 2008), V. Atluri , and M. Winslett (Eds.), pp. 111-116, ACM Press, 2008. [Acceptance rate 35%, 15/42]
19. On the Impact of Social Network Profiling on Anonymity. Claudia Diaz, Carmela Troncoso and Andrei Serjantov. In Proceedings of the 8th Privacy Enhancing Technologies Symposium (PETS'08), N. Borisov and I. Goldberg (Eds), Springer LNCS 5134, pp. 44-62, 2008. [Acceptance rate 26%, 13/49]
20. Does additional information always reduce anonymity? Claudia Diaz, Carmela Troncoso and George Danezis. In Proceedings of the 6th ACM Workshop on Privacy in the Electronic Society (WPES'07), T. Yu (Ed), pp.72-75, ACM Press, 2007. [Acceptance rate 33%, 16/48]
21. Efficient Negative Databases from Cryptographic Hash Functions. George Danezis, Claudia Diaz, Sebastian Faust, Emilia Käsper, Carmela Troncoso and Bart Preneel. In Proceedings of the 10th Information Security Conference (ISC'07), J. Garay et al. (Eds.), Springer LNCS 4779, pp. 423-436, 2007. [Acceptance rate 25%, 29/116]
22. Two-Sided Statistical Disclosure Attack. George Danezis, Claudia Diaz and Carmela Troncoso. In Proceedings of the 7th Privacy Enhancing Technologies (PET'07), N. Borisov and P. Golle (Eds), Springer LNCS 4776, pp. 30-44, 2007. [Acceptance rate 19%, 16/84]
23. Traffic Analysis Attacks on a Continuously-Observable Steganographic File System. Carmela Troncoso, Claudia Diaz, Orr Dunkelman and Bart Preneel.  In proceedings of 9th Information Hiding (IH'07), T. Furon et al. (Eds), Springer LNCS 4567, pp. 220-236, 2007.  [Acceptance rate 23%, 25/106]
24. Space-Efficient Private Search. George Danezis and Claudia Diaz.  In the Proceedings of the 11th International Conference on Financial Cryptography and Data Security (FC'07), S. Dietrich and R. Dhamija (Eds), Springer LNCS 4886, pp. 148-162, 2007.  [Acceptance rate 20%, 17/85]
25. Accountable Anonymous Communication. Claudia Diaz and Bart Preneel. Chapter in Security, Privacy and Trust in Modern Data Management, M. Petkovic and W. Jonker (Eds), ISBN: 978-3-540-69860-9, pp. 239-256, Springer, 2007.
26. Improving the Decoding Efficiency of Private Search. George Danezis and Claudia Diaz. In Anonymous Communication and its Applications, Dagstuhl Seminar Proceedings number 0541.  Internationales Begegnungs- und Forschungszentrum für Informatik (IBFI), Schloss Dagstuhl, S. Dolev, R. Ostrovsky, and A. Pfitzmann (Eds), 11 pages, 2006.
27. Anonymity Metrics Revisited. Claudia Diaz. In Anonymous Communication and its Applications, In Anonymous Communication and its Applications, Dagstuhl Seminar Proceedings number 0541.  Internationales Begegnungs- und Forschungszentrum für Informatik (IBFI), Schloss Dagstuhl, S. Dolev, R. Ostrovsky, and A. Pfitzmann (Eds), 6 pages, 2006.
28. Anonymity and Privacy in Electronic Services. Claudia Diaz. Ph.D. Thesis. Katholieke Univesiteit Leuven, 2005.
29. Mix Cascades vs. Peer-to-Peer: Is One Concept Superior?. Rainer Böhme, George Danezis, Claudia Diaz, Stefan Köpsell, and Andreas Pfitzman. In the proceedings of Privacy Enhancing Technologies (PET'04), D. Martin and A. Serjantov  (Eds), Springer LNCS 3424, pp. 243-255, 2004.
30. Comparison between two practical mix designs. Claudia Diaz, Len Sassaman and Evelyne Dewitte. Computer Security (ESORICS'04). P. Samarati et al. (Eds), Springer LNCS 3193, pp. 141-159, 2004.  [Acceptance rate 17%, 27/159]
31. Taxonomy of Mixes and Dummy Traffic. Claudia Diaz and Bart Preneel. In Information Security Management, Education and Privacy (I-NetSec'04). Kluwer Academic Publishers, Y. Deswarte, F. Cuppens, S. Jajodia and L. Wang (Eds), ISBN 1-4020-8144-8, Vol. 3 pp. 215-230, 2004.
32. Reasoning about the Anonymity Provided by Pool Mixes that Generate Dummy Traffic. Claudia Diaz and Bart Preneel. Information Hiding (IH'04). J. Fridrich (Ed.), Springer LNCS 3200, pp. 309-325, 2004. [Acceptance rate 35%, 25/70]
33. Anonymous communication. Claudia Diaz and Bart Preneel. WHOLES - A Multiple View of Individual Privacy in a Networked World. Internet publication, 7 p., 2004.
34. Generalising Mixes. Claudia Diaz and Andrei Serjantov. In the proceedings of Privacy Enhancing Technologies (PET'03). R. Dingledine (Ed.), Springer LNCS 2760, pp. 18-31, 2003. [Acceptance rate 26%, 14/52]
35. Revocable anonymous access to the Internet. Joris Claessens, Claudia Diaz, Caroline Goemans, Bart Preneel, Joos Vandewalle and Jos Dumortier. Journal of Internet Research: Electronic Networking Applications and Policy, Volume 13, Number 4, pages 242--258, 2003.
36. APES: Anonymity and Privacy in Electronic Services. Claudia Diaz, Joris Claessens and Bart Preneel. In Journal DuD (Datenschutz und Datensicherheit), 27(3):143-145, 2003.
37. Information Theory and anonymity. Claudia Diaz, Joris Claessens, Stefaan Seys and Bart Preneel. Werkgemeenschap voor Informatie en Communicatietheorie. B. Macq and J.-J. Quisquater (Eds), pp. 179-186, 2002.
38. Towards measuring anonymity. Claudia Diaz, Stefaan Seys, Joris Claessens and Bart Preneel. Designing Privacy Enhancing Technologies (PET'02). R. Dingledine and P. Syverson (Eds), Springer LNCS 2482, pp. 54-68, 2002.[Acceptance rate 35%, 17/47]

Edited books

• Computer Security – ESORICS 2011. Proceedings of the16th European Symposium on Research in Computer Security, Leuven, Belgium, September 12-14, 2011. Lecture Notes in Computer Science (LNCS), Vol. 6879, Vijay Atluri and Claudia Diaz (Eds.), 686 pages, Springer.
  

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Committees

Chair

• Award Committee co-Chair of the Award for Outstanding Research in Privacy Enhancing Technologies (PET Award 2012)
• Program co-Chair of the 16^th European Symposium on Research in Computer Security (ESORICS 2011)
• Award Committee Chair of the Award for Outstanding Research in Privacy Enhancing Technologies (PET Award 2011)
• General Chair of the 8^th Privacy Enhancing Technologies Symposium (PETS 2008)
  

Advisory Boards

• Advisory Board member of the Privacy Enhancing Technologies Symposium (PETS)
• Member of the organizing Scientific Committee of the Conference on Computers, Privacy and Data Protection (CPDP)
• Member of the Reference Group of the FP7 project ABC4Trust 
• Member of the Advisory Board of FP7 project SURVEILLE
  

Editorial activities

• Associate Editor (2007-2010) of the Journal on Identity in the Information Society (IDIS)
• Guest Editor (2013) special issue Journal of Computer Security (JCS)
  

Program Committee member

• Award for Outstanding Research in Privacy Enhancing Technologies (PET Award 2013)
• 18th European Symposium on Research in Computer Security (ESORICS’13)
• 2nd Usenix Workshop on Free and Open Communications on the Internet (FOCI'13)
  
• IFIP Summerschool on Privacy and Identity Management 2013
  
• Computers, Privacy and Data Protection (CPDP 2013)
• Annual Privacy Forum 2012
  
• 17th European Symposium on Research in Computer Security (ESORICS’12)
• 15^th Information Security Conference (ISC'12)
• 20^th Usenix Security Symposium (USENIX'11)
  
• 11^th Privacy Enhancing Technologies Symposium (PETS'11)
• 14^th Information Security Conference (ISC'11)
• Financial Cryptography and Data Security (FC'11)
  
• Workshop on Privacy in the Electronic Society (WPES’10)
• 15th European Symposium on Research in Computer Security (ESORICS’10)
• 10^th Privacy Enhancing Technologies Symposium (PETS'10)
• 13^th Information Security Conference (ISC'10)
• 7th European Workshop on Public Key Services, Applications and Infrastructures (EuroPKI'10)
  
• 3^rd Multidisciplinary Research Workshop on Identity in the Information Society (IDIS’10)
• Privacy on the Web (track SAC 2010)
• Workshop on Privacy in the Electronic Society (WPES’09)
• 16^th ACM Conference on Computer and Communications Security (ACM CCS'09)
• 9^th Privacy Enhancing Technologies Symposium (PETS'09)
• IEEE International Conference on Privacy, Security, Risk and Trust (PASSAT’09)
• 4^th Workshop on Data Privacy Management (DPM'09)
• 4^th Mediterranean Conference on Information Systems (MCIS’09)
• 6^th International ISC Conference on Information Security and Cryptology (ISCISC’09)
• 12^th Information Security Conference (ISC'09)
• 6^th International Conference on Trust, Privacy & Security in Digital Business (TrustBus'09)
• Workshop on Online Social Networks 2009 (WOSN’09)
• International Workshop on Privacy-Preserving Data Analysis (PPDA'09)
• 15^th ACM Conference on Computer and Communications Security (ACM CCS'08)
• 8^th Privacy Enhancing Technologies Symposium (PETS'08)
• 11^th Information Security Conference (ISC'08)
• Workshop on Applications of Private and Anonymous Communications (AlPACa'08)
• International Conference on E-Business (ICE-B 2008)
• IEEE International Symposium on Industrial Electronics (ISIE'08)
• 14^th ACM Conference on Computer and Communications Security (ACM CCS'07)
• 7^th Privacy Enhancing Technologies Symposium (PETS'07)
• 10^th Information Security Conference (ISC'07)
• International Conference on Security of Information and Networks (SIN/ABG 2007)
• International Conference on E-Business (ICE-B 2007)
• 2^nd SKLOIS Conference on Information Security and Cryptology (InsCrypt'06)
• 4^th Workshop on Internet Communications Security (WICS'06)

Service as journal scientific reviewer

• International Journal on Networked Business
  
• IEEE/ACM Transactions on Networking (ToN)
• IEEE Transactions on Knowledge and Data Engineering (TKDE)
• IEEE Transactions on Dependable and Secure Computing (TDSC)
• Journal of Computer Security (JCS)
  
• IBM Systems Journal
• Elsevier Journal of Systems and Software (JSS)
• IEEE Communication Letters (CL)
• Elsevier Computer Communications
• IEEE Journal on Selected Areas in Communications (JSAC)
  

• IEEE Transactions on Information Forensics & Security (TIFS)
• IEEE Transactions on Mobile Computing (TMC)
  
• IEEE Wireless Communications Magazine
  
• Journal of Supercomputing
  
• Elsevier Theoretical Computer Science
• Journal of Zhejiang University SCIENCE (JZUS)
• Elsevier International Journal of Computer and Telecommunications Networking (COMNET)
• ACM Transactions on Information and System Security (TISSEC)

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I have (co-)organized the following events

• Provable Privacy Workshop. Vigo (Spain), July 9-10, 2012 (co-organized with Gregory Neven, Jan Camenisch, and Bart Preneel)
  
• Interdisciplinary Privacy Course. Leuven (Belgium), June 27-29, 2012.
• Interdisciplinary Privacy Course. Leuven (Belgium), June 27-28, 2011.
• Privacy in ITS Applications Workshop. Berlin (Germany), July 20, 2010 (co-organized with Johann-Christoph Freytag, Frank Kargl, and Carmela Troncoso, and with the support of Antonio Kung)
  
• Interdisciplinary Privacy Course. Leuven (Belgium), June 23-24, 2010.
• ADAPID 4^th Workshop. Heverlee (Belgium), November 17, 2009 (co-organized with Alfredo Rial).
• Workshop on Future Privacy and Security Research Challenges in Online Social Networks. Heverlee (Belgium), November 5, 2009 (co-organized with Seda Gürses).
• Interdisciplinary Privacy Course. Heverlee (Belgium), June 11, 16 and 22, 2009.
• General Chair of the 8^th Privacy Enhancing Technologies Symposium (PETS'08). Leuven (Belgium), July 23-25, 2008.
• Local Organizing Chair of the Workshop on Trustworthy Elections (WOTE'08). Leuven (Belgium), July 22-23, 2008.
• FIDIS WP13 Workshop.  Leuven (Belgium), July 22, 2008.
• 3^rd ADAPID Workshop. Heverlee (Belgium), July 22, 2008 (co-organized with Carmela Troncoso).
• 2^nd ADAPID Workshop. Heverlee (Belgium), September 28, 2007.
• 1^st ADAPID Workshop. Heverlee (Belgium), September 26, 2006.
• FIDIS Workshop on Privacy Fundamentals  Heverlee (Belgium), July 25, 2006.
• 5^th APES Workshop. Heverlee (Belgium), November 23, 2004.
• 4^th APES Workshop. Heverlee (Belgium), September 24, 2003.
• 3^rd APES Workshop. Heverlee (Belgium), November 5, 2002.
• 2^nd APES Workshop. Heverlee (Belgium), November 21, 2001.
• 1^st APES Workshop. Heverlee (Belgium), April 19, 2001.

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Technical Reports and Posters

1. A Survey of Anonymous Communication Channels. George Danezis and Claudia Diaz. Microsoft Technical Report MSR-TR-2008-35. February 2008, 46 pages [pdf]
2. Construcción de redes sociales anónimas. Alejandra Silva, Javier Garcia, and Claudia Diaz,  In Reunión Española sobre Criptología y Seguridad de la Información (RECSI '08), L. Hernandez, and A. Martin (Eds.), pp. 647-652, 2008.
3. Mining anonymized traffic data. Claudia Diaz. Poster presentation at the NATO Advanced Study Institute on Mining Massive Data Sets for Security. Villa Cagnola, (Italy), September 20, 2007. [poster]
4. Anonymity Metrics Applied to Partial Profiling. Claudia Diaz. FIDIS 2nd PhD Event. October 2005, 2 pages.
5. Profiling Game. Claudia Diaz. FIDIS 1st PhD Event. January 2005, 4 pages.
6. Anonymity and Mixes. Claudia Diaz. FIDIS 1st PhD Event. January 2005, 2 pages.
7. Anonymous communications. Claudia Diaz. Poster presentation at the 1st Flanders Engineering Ph.D. Symposium. Brussels (Belgium), December 11, 2003. 
8. A secure and privacy-preserving web banner system for targeted advertising. Joris Claessens, Claudia Diaz, Raimondo Faustinelli and Bart Preneel. August 2003. 31 pages.
9. Anonymity and Privacy in Electronic Services. Claudia Diaz. Poster presentation at the Ph.D. Symposium of the Faculty of Engineering of the KULeuven. Heverlee (Belgium), December 11, 2002.

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Talks and Panels

1. Privacy Technologies. COSIC Course. Heverlee (Belgium). June 4, 2013 [slides]
2. Developing Trust in Cyberspace: Pulling Together Law, Technology, and Policy. Invited talk at GREPSEC. San Francisco (CA, USA). May 19, 2013. 
3. Two tales of privacy in OSNs. Guest seminar at Palo Alto Research Center (PARC). Palo Alto (CA, USA). May 16, 2013. [slides]
4. Two tales of privacy in OSNs. Guest lecture at the University of Waterloo. Waterloo (Canada). April 5, 2013. [slides]
5. Two tales of privacy in OSNs. Guest talk for the Information Systems Security Association (ISSA-BE). Brussels (Belgium). March 14, 2013. [slides]
6. Introduction to privacy technologies. Secure Application Development (SecAppDev 2013). Leuven (Belgium). March 6, 2013. [slides]
7. Two tales of privacy in OSNs. Guest lecture at TU Darmstadt. Darmstadt (Germany). February 12, 2013. [slides]
8. Security and privacy protection in online social networks. Panel at the For Your Eyes Only Conference. Brussels, November 30, 2012. [link]
   
9. Consensual exploitation on social media. Panel at the For Your Eyes Only Conference. Brussels, November 29, 2012. [link]
   
10. Overview of security and privacy technologies. Guest lecture at the course "Interdisciplinary perspectives on ICT". Brussels (Belgium). November 26, 2012. [slides]
11. Hero or Villain: The Data Controller in Privacy Law and Technologies. Invited talk at the Ohio State Law Journal Symposium "The Second Wave of Global Privacy Protection". Columbus  (OH, USA). November 16, 2012. [slides] [abstract]
12. Obfuscation-based private web search. Invited talk at the Amsterdam Privacy Conference (APC'12). Amsterdam (The Netherlands). October 9, 2012. [slides]
    
13. The impact of upcoming privacy legislation for PETs. Panel at the 12th Privacy Enhancing Technologies Symposium (PETS 2012). Vigo (Spain). July 11, 2012.
    
14. Technologies for private search. Interdisciplinary Privacy Course. Leuven (Belgium). June 28, 2012 [slides]
15. Introduction to Privacy. Interdisciplinary Privacy Course. Leuven (Belgium). June 27, 2012 [slides]
16. Privacy research paradigms. Invited talk at the Information Security Summit (IS2). Prague (Czech Republic). May 31, 2012.
    
17. 3x3: Confidentialtiy, Control and transparency. Guest talk (jointly with Seda Gürses) at re:publica 2012. Berlin (Germany). May 2, 2012.
    
18. Introduction to privacy technologies. Secure Application Development (SecAppDev 2012). Leuven (Belgium). March 6, 2012.
    
19. A ‘Trusted’ Panel: A Need for Constructive Distrust? Computers, Privacy and Data Protection (CPDP 2012). Brussels (Belgium). January 25, 2012.
20. Overview of security and privacy technologies. Guest lecture at the Postgraduate Studies in ICT & Media Law programme. Leuven (Belgium). December 5, 2011. [slides]
    
21. Engineering privacy by design. Invited seminar at the Oxford Internet Institute. Oxford (UK). November 23, 2011. [slides]
    
22. Engineering privacy by design. Invited talk at the Xootic alumni association. Eindhoven (Netherlands). September 23, 2011. [slides]
    
23. A closer look at cloaking techniques for location privacy. Keynote talk 6th International Workshop on Data Privacy Management (DPM). Leuven (Belgium). September 15, 2011.
    
24. Analysis of cloaking techniques for location privacy. Invited talk at the NII Workshop in ICT Resilience. Karuizawa (Japan). August 2, 2011.
    
25. Trust, security, and privacy technologies. Guest seminar at the University of Vigo. Vigo (Spain). July 8, 2011
    
26. Privacy & trust in architectures. 4th Summer School on Network and Information Security. Heraklion (Crete, Greece). June 30, 2011 [slides]
    
27. Technical Aspects of Location Privacy. Interdisciplinary Privacy Course. Leuven (Belgium). June 27, 2011 [slides]
28. Introduction to Privacy. Interdisciplinary Privacy Course. Leuven (Belgium). June 27, 2011 [slides]
29. Privacy research challenges. Workshop Socio-economics in trustworthy ICT. Brussels (Belgium). June 22, 2011
    
30. Privacy Technologies. COSIC Course. Heverlee (Belgium). June 14, 2011 [slides]
    
31. What information do we leak through our online activities? Algemene Vergadering Overlegcentrum voor Ethiek: Internet en privacy. Leuven (Belgium). May 30, 2011. [slides]
32. Invited speaker at the launching of the Belgian Association for Studies and Research into the Protection of Privacy. House of Representatives, Brussels (Belgium). May 18, 2011.
    
33. What can be learnt about your private life? IEEE Student Branch Soirée Technique. Heverlee (Belgium). May 5, 2011.
    
34. The challenge of protecting privacy in the information era. Inaugural lecture. Heverlee (Belgium). April 8, 2011. [slides]
35. Introduction to privacy technologies. Guest lecture at the Universidad Autonoma de Barcelona. Barcelona (Spain). March 10, 2011. [slides]
36. Introduction to privacy technologies. Secure Application Development (SecAppDev 2011). Leuven (Belgium). March 2, 2011. [slides]
37. Privacy by design and privacy models. Computers, Privacy and Data Protection (CPDP 2011). Brussels (Belgium). January 27, 2011
    
38. Panel on implementing privacy in online service models. Panel moderator. Computers, Privacy and Data Protection (CPDP 2011). Brussels (Belgium). January 25, 2011
39. Security and privacy technologies. Guest lecture at the Postgraduate Studies in ICT & Media Law programme. Leuven (Belgium). December 20, 2010. [slides]
    
40. Trust, security, and privacy technologies. Keynote talk at the Trust in Digital Life workshop. Nice (France). December 2, 2010. [slides]
    
41. Panel on Privacy by Design. Panelist. Plenary panel at the 32^nd International Conference of Data Protection and Privacy Commissioners. Jerusalem (Israel). October 28, 2010. [video link1] [video link 2]
    
42. Unraveling an Old Cloak: k-anonymity for Location Privacy. ACM Workshop on Privacy in the Electronic Society (WPES'10). Chicago, IL (USA). October 4th, 2010 [slides]
    
43. Impact of Network Topology on Anonymity and Overhead in Low-Latency Anonymity Networks. Privacy Enhancing Technologies Symposium (PETS) 2010. Berlin (Germany). July 22, 2010. [slides]
    
44. Panel on Using and Choosing PETs for ITS Applications. Privacy in ITS Applications Workshop. Berlin (Germany). July 20, 2010. [slide]
45. Impact of Network Topology on Anonymity and Overhead in Low-Latency Anonymity Networks. COSIC Seminar. Heverlee (Belgium). July 15, 2010.
    
46. Privacy Enhancing Technologies. Invited talk at the Microsoft Roundtable on Privacy by Design. Brussels (Belgium). June 23, 2010 [slides]
    
47. Overview of Privacy Enhancing Technologies. Interdisciplinary Privacy Course. Leuven (Belgium). June 23, 2010 [slides]
48. Introduction to Privacy. Interdisciplinary Privacy Course. Leuven (Belgium). June 23, 2010 [slides]
49. Privacy Enhancing Technologies. 10 hour course for the Ph.D. program at the Universidad Politécnica de Cataluña (UPC). Barcelona (Spain). June 14-18, 2010. [slides]
    
50. PrETP: Privacy-Preserving Electronic Toll Pricing. LICT Industrial Affiliation Day. Heverlee (Belgium). June 3, 2010. [slides]
    
51. Drac: An Architecture for Anonymous Low-Volume Communications. INRIA workshop on privacy. Grenoble (France). March 9, 2010. [slides]
    
52. Privacy Technologies. Secure Application Development (SecAppDev 2010). Leuven (Belgium). February 24, 2010 [slides]
    
53. Panel on Forgetfulness and Data Retention. Panel moderator. Computers, Privacy and Data Protection. Brussels (Belgium). January 29, 2010
54. Attacks on the Vehicle Infrastructure Integration (VII) anonymous certificates. Seminar for the EPFL Laboratory for Computer Communications and Applications. Lausanne (Switzerland). December 2, 2009.
55. The wisdom of Crowds: attacks and optimal constructions. ZISC Information Security Colloquium. Zürich (Switzerland). December 1, 2009. [slides]
56. Privacy in the information society. LICT Distinguished Lecture Program. Heverlee (Belgium). November 10, 2009. [slides]
57. Management of a Data Breach. Panel moderator. EDPS/ENISA Seminar on Responding to Data Breaches. Brussels (Belgium). October 23, 2009.
58. Privacy Issues of Imaging Technologies for Security Search Applications. LICT Workshop on Millimeter Wave Imaging and Technologies for Security Applications. Heverlee (Belgium). July 9, 2009 [slides]
59. Privacy technologies. COSIC Course. Heverlee (Belgium). July 7, 2009 [slides]
60. Privacy at the communication layer. Interdisciplinary Privacy Course. Heverlee (Belgium). June 16, 2009 [slides]
61. Introduction to Privacy. Interdisciplinary Privacy Course. Heverlee (Belgium). June 11, 2009 [slides]
62. A Framework for the Analysis of Mix-Based Steganographic File Systems. Computer Lab Departmental Seminar. Cambridge (UK). January 28th, 2009 [slides]
63. Panel on Data Breaches by Government Departments and Problems with E-Voting. Panel moderator. Computers, Privacy and Data Protection Brussels (Belgium). January 17, 2009
64. Panel on Future of the Internet: Real World Internet. Panelist. Future of the Internet Assembly (session on Real World Internet). Madrid (Spain). December 10, 2008
65. Security and Privacy Challenges in the Real World Internet. Invited talk at the Future of the Internet Assembly (session on Real World Internet). Madrid (Spain). December 9, 2008 [slides]
66. Privacy and anonymity. Invited seminar at the Universitat Politècnica de Catalunya (Information Security Group). Barcelona (Spain), November 24, 2008 [slides]
67. A Framework for the Analysis of Mix-Based Steganographic File Systems. ESORICS: 13th European Symposium on Research in Computer Security. October 8th 2008, Malaga, Spain. [slides]
68. A Framework for the Analysis of Mix-Based Steganographic File Systems. COSIC Seminar. Heverlee (Belgium). October 2nd, 2008
69. Privacy preserving electronic petitions. Identity in the Information Society (IDIS) Workshop. Arona (Italy) May 29, 2008 [slides]
70. Steganographic file systems. One-hour lecture at the Computer Security course of the Master in Computer Science Research of the Universidad Complutense de Madrid. Madrid (Spain) April 23, 2008. [slides]
71. Introduction to anonymous communication. Two-hour lecture at the ATHENS Intensive Course Programme. Heverlee (Belgium) March 13, 2008 [slides]
72. Advanced applications for e-ID cards. L-SEC Identity management and e-ID conference. Leuven (Belgium). February 28, 2008 [slides]
73. Steganographic file systems. Invited colloquium talk at Karlstad University. Karlstad (Sweden). January 21st, 2008
74. Steganographic file systems. Invited talk at the Santa's Crypto Get-together 2007. Prague (Czech Republic). December 6th, 2007
75. Does additional information always reduce anonymity? 6th ACM Workshop on Privacy in the Electronic Society (WPES'07). Alexandria, VA (USA). October 29th, 2007 [slides]
76. Does additional information always reduce anonymity? COSIC Seminar. Heverlee (Belgium). October 26th, 2007 [slides]
77. Efficient Negative Databases from Cryptographic Hash Functions. 10th Information Security Conference (ISC'07). Viña del Mar (Chile). October 12th, 2007 [slides]
78. Introduction to Anonymous Communications. One hour tutorial at the 10th Information Security Conference (ISC'07). Viña del Mar (Chile). October 9th, 2007 [slides]
79. Efficient Negative Databases from Cryptographic Hash Functions. COSIC Seminar. Heverlee (Belgium). October 5th, 2007 [slides]
80. Privacy-Enhanced e-Petitions. 2nd ADAPID Workshop. Heverlee (Belgium). September 28th, 2007 [slides]
81. Anonymity Metrics, Mixes, and Space-Efficient Private Search. Curso en Seguridad de Computadores, Maestría en Investigación Informática la Universidad Complutense de Madrid. Madrid (Spain), May 21st, 2007.
82. Space-Efficient Private Search. 11^th International Conference on Financial Cryptography and Data Security (FC'07). Scarborough (Trinidad and Tobago). February 13th, 2007 [slides]
83. Space-Efficient Private Search. COSIC Seminar. Heverlee (Belgium). February 7th, 2007 [slides]
84. Requirements for e-ID Applications. 1st ADAPID Workshop. Heverlee (Belgium). September 26th, 2006 [slides]
85. Privacy and Anonymity in Electronic Services. PhD defense. Heverlee (Belgium). December 19th, 2005 [slides]
86. Anonymity Metrics Applied to Partial Profiling. 2nd FIDIS PhD Event. Santorini (Greece). October 21st, 2005.
87. Anonymity Metrics Revisited.  Dagstuhl Seminar on Anonymity and its Applications. Saarbrucken (Germany). October 13th, 2005.
88. ADAPID: eID in Belgium.  FIDIS Workshop on ID documents. Frankfurt (Germany). June 22nd, 2005.
89. Panel on revocable anonymity. Panelist. Workshop on Privacy Enhancing Technologies (PET) 2005. Cavtat (Croatia). May 31st, 2005.
90. Profiling game. COSIC Seminar. Heverlee (Belgium). March 23rd, 2005.
91. Privacy-Enhanced Ambient Intelligence Profiling. FIDIS Workshop on Profiling. Brussels (Belgium). March 3rd, 2005.
92. Anonymity and Mixes. 1st FIDIS PhD Event. Riezlern (Austria). January 22nd, 2005.
93. Controlled Anonymous Communication. 5th APES Workshop. Heverlee (Belgium). November 23rd, 2004. [slides]
94. Comparison between two practical mix designs. ESORICS: 9th European Symposium on Research in Computer Security. September 13th 2004, Sophia Antipolis, French Riviera, France. [slides]
95. Taxonomy of Mixes and Dummy traffic . I-NetSec04: 3rd Working Conference on Privacy and Anonymity in Networked and Distributed Systems. August 26th 2004, Toulouse, France. [slides]
96. Anonymity and Privacy. Course G13 of the 2004 Summer Complutense School (ECV 2004) on Practical Security for the Internet and Intranet July 5-30. Madrid (Spain). July 23rd 2004. [slides]
97. Panel on Mix Cascades vs. Peer-to-Peer: Is One Concept Superior? Panel moderator. Workshop on Privacy Enhancing Technologies (PET) 2004. Toronto (Canada). May 257h, 2004.
98. Reasoning about the Anonymity Provided by Pool Mixes that Generate Dummy Traffic. 6th Information Hiding Workshop. Toronto (Canada). May 25th, 2004. [slides]
99. Anonymous communications. WHOLES - A Multiple View of Individual Privacy in a Networked World . Stockholm (Sweden). January 30th, 2004. [slides]
100. Reasoning about the anonymity provided by pool mixes that generate dummy traffic. COSIC Seminar. Heverlee (Belgium). December 17th, 2003. [slides]
101. Privacy Rights Management. Digital Rights Management -- L-SEC Technology Workshop. Heverlee (Belgium). December 4th, 2003.[slides]
102. Building blocks for controlled anonymity. 4th APES Workshop. Heverlee (Belgium). September 24, 2003. [slides]
103. Ph.D. progress presentation. Heverlee (Belgium). May 20, 2003. [slides]
104. Generalising mixes. Workshop on Privacy Enhancing Technologies (PET) 2003. Dresden (Germany), March 26, 2003. [slides]
105. Generalising mixes. COSIC Seminar. Heverlee (Belgium). January 22, 2003. [slides]
106. Anonymous Targeted Advertising System. 3rd APES Workshop. Heverlee (Belgium). November 5, 2002. [slides]
107. Information Theory and Anonymity. 23rd Symposium on Information Theory in the Benelux. Louvain la Neuve (Belgium). May 29, 2002.[slides]
108. Towards Measuring Anonymity. Workshop on Privacy Enhancing Technologies (PET) 2002. San Francisco (USA). April 14, 2002. [slides]
109. Overview of technologies and building blocks for anonimity. 2nd APES Workshop. Heverlee (Belgium). November 21, 2001.[slides]
110. Towards Measuring Anonymity. COSIC Seminar. Heverlee (Belgium). October 3, 2001. [slides]
111. Anonymity requirements for eCommerce schemes and online elections. 1st APES Workshop. Heverlee (Belgium). April 19, 2001. [slides]

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Students

Ph.D. Advisor

• Güneş Can Acar
  
• Ero Balsa
• Michael Herrmann
  
• Carmela Troncoso graduated April 29, 2011 with summa cum laude with the congratulations of the board of examiners (only awarded by K.U.Leuven to the top 5% doctorates)
  

Ph.D. Assessor

• Josep Balasch, KU Leuven ESAT/COSIC and University of Nijmegen (Ph.D. advisors: Ingrid Verbauwhede and Bart Jacobs)
• Filipe Beato, KU Leuven ESAT/COSIC (Ph.D. advisor: Bart Preneel)
  
• Willem De Groef, KU Leuven CS/DistriNet (Ph.D. advisor: Frank Piessens)
  
• Rula Sayaf, KU Leuven CS/DistriNet (Ph.D. advisor: Dave Clarke)
• Roel Verdult, University of Nijmegen and K.U.Leuven ESAT/COSIC (Ph.D. advisors: Bart Jacobs and Ingrid Verbauwhede)

Ph.D. Examination Committees

• Patricia Arias Cabarcos (Universidad Carlos III de Madrid, Ph.D. advisor: Florina Almenares Mendoza). Madrid (Spain), April 30, 2013.
  
• Alfredo Rial (KU Leuven, Ph.D. advisor: Bart Preneel). Leuven (Belgium), April 24, 2013.
• Juan Vera del Campo (Universidad Politécnica de Cataluña, Ph.D. advisor: Josep Pegueroles Vallés). Barcelona (Spain), October 29, 2012.
  
• Matthijs Koot (University of Amsterdam, Ph.D. advisors: Cees de Laat, Michel Mandjes, Guido van 't Noordende). Amsterdam (The Netherlands), June 27, 2012.
  
• Patrik Bichsel (KU Leuven / IBM Research Zurich, Ph.D. advisors: Bart Preneel and Jan Camenisch). Leuven (Belgium), March 15, 2012.
  
• Ghassan Karame (ETH Zürich, Ph.D. advisor: Srdjan Capkun). Zürich (Switzerland), September 6, 2011.
  
• Seda Gürses (KU Leuven, Ph.D. advisors: Bettina Berendt and Bart Preneel). Leuven (Belgium), May 28, 2010.
• Markulf Kohlweiss (KU Leuven, Ph.D. advisor: Bart Preneel). Leuven (Belgium), March 30, 2010.
  
• Christer Andersson (Karlstad University, Ph.D. advisor: Simone Fischer-Hübner). Karlstad (Sweden), January 21st, 2008 (I was the opponent at the Ph.D. defense).
  
• Vicente Benjumea (Universidad de Malaga, Ph.D. advisor: Javier Lopez). Malaga (Spain), November 22nd, 2007.

Master Students

• Together with Ero and Michael, I have supervised the master thesis of Simón Oya Díez (University of Vigo). Simon analyzed the security of the distributed social network Safebook.
  
• Together with Carmela, I have supervised the master thesis of Evanthia Theodoridou (K.U.Leuven) between October 2010 and May 2011.  Evanthia worked on privacy threats and solutions in assisted environments.
  
• Together with Carmela, I have supervised the master thesis of Ero Balsa (University of Vigo, Spain) between January and September 2010. Ero worked on dummy traffic strategies for traffic analysis resistant social networks.
  
• Together with Carmela, I have supervised the master thesis of Ana Peleteiro (University of Vigo, Spain) between February and June 2009. Ana worked on the simulation and comparison of GPS samples anonymization algorithms.
• Together with Markulf, I have supervised Josep Balasch (Polytechnic University of Catalonia, Spain) between February and July 2008. Josep worked on a smart card implementation of an anonymous credential protocol.
• Together with Carmela, I have supervised the master thesis of Victor Sucasas (University of Vigo, Spain) between February and July 2008. Victor implemented an anonymous credential protocol.
• Together with Carmela, I have supervised Tim Van Hoeck (K.U.Leuven) between September 2007 and May 2008. Tim implemented a Thunderbird Extension to collect email traffic data.
• Together with Markulf, I have supervised Alfredo Rial (University of Vigo, Spain) from September 2007 to March 2008. Alfredo worked on oblivious transfer protocols, in particular on Public-key Encryption with Oblivious Keyword Search, and on Priced Oblivious Transfer.
• Together with Markulf, I have supervised Girma Enideg Nigusse (Royal Institute of Technology (KTH), Sweden) from April to September 2007. Girma has implemented an electronic petition demonstrator based on the Idemix anonymous credentials.
• Together with Carmela, I have supervised Venelin Gornishki (Sofia University, Bulgaria) between February and June 2007. Venelin has implemented a protocol for long-term secure archiving of documents, which uses the Belgian e-ID for authentication and digital signatures.
• I supervised Ovidiu Caba (University of Oradea, Romania) between February and June 2004. Ovidiu worked on the implementation of a Graphical User Interface for the MIXimulator .
• I supervised Raimondo Faustinelli (Hogeschool van Utrecht, The Netherlands) between November 2002 and July 2003. Raimondo developed a simulator for mix networks, the MIXimulator.

I have been supervisor from 2002 to 2004 of the crypto group for the HJ82 design seminar.

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Projects

The list of project reports on which I have worked is available here.

I am one of the principal investigators of the FWO project Contextual privacy and the proliferation of location data (2011-2014).

I am the scientific coordinator of IWT SBO SPION (Security and Privacy in Online Social Networks) (2011-2014). The goal of this project is to study security and privacy risks of online social networks and to propose solutions that mitigate these risks.

From 2005 to 2009, I worked on IWT SBO ADAPID (Advanced Applications for the Electronic ID Card in Flanders). This project focused on developing privacy enhanced identity management systems.

From 2004 to 2009, I was involved with the EU IST FP6 FIDIS Network of Excellence. This Network of Excellence developed an integrated view on Identity in the European Society.

From 2000 to 2004 my work was mainly developed in the framework of the APES project. This project studied privacy and anonymity in electronic services.

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