Oliver Hohlfeld

Professor, Chair of Computer Networks, Brandenburg University of Technology (BTU)

CV

I’m a Professor and head the Chair of Computer Networks at Brandenburg University of Technology (BTU). Before, I headed the Network Architectures group at the chair for Communication and Distributed Systems at RWTH Aachen University. Before I was with Anja Feldmann at TU Berlin / Deutsche Telekom Innovation Laboratories. I was a visiting scholar at the group of Paul Barford at the University of Wisconsin - Madison, USA.

I studied computer science at Darmstadt University of Applied Sciences, Institute Eurecom (Sophia Antipolis, France) and Darmstadt University of Technology and hold a Bachelor of Science (B.Sc.) and Master of Science (M.Sc.) degree. From 2004 to 2006 I was with the Fraunhofer IGD where I worked on network architectures for telemedical applications. I obtained a Ph.D. (Dr. rer. nat.) from TU Berlin in 2013 (Advisor: Anja Feldmann).

I am a Senior Member of the ACM.

Interests

  • Network Security
  • Network Measurements
  • Internet architecture / protocols
  • Quality of Experience / Psychological Studies

Education

  • Dr. rer. nat. (Ph.D.) in Computer Science, 2013

    TU Berlin (Advisor: Anja Feldmann)

  • M.Sc. in Computer Science, 2008

    TU Darmstadt

I use a data-driven approach including user studies, empirical network measurement, and machine learning
to understand and improve Internet performance and security.

News

2021-11serviceTPC of ACM SIGCOMM 2022
2021-10paperPart of Leo’s bachelor thesis will appear at the CoNEXT'21 Student Workshop
2021-09serviceCristel and me will be TPC Chair of PAM'22. I am also joining the Steering Committee of TMA.
2021-09paperOur paper on DDoS detection at scale will appear at CCS'21. Our work on analyzing the Cyberbunker bulletproof hoster will appear as CCS'21 poster.
2021-07serviceTPC of ACM SIGMETRICS'22
2021-07paperThe CCR editorial board has selected our TLS 1.3 deployment measurement paper to be presented in the best of CCR session at ACM SIGCOMM'21.
2021-06paperNew Paper CACM Research Highlight A Year in Lockdown: How the Waves of COVID-19 Impact Internet Traffic appeared in the July 2021 edition of CACM. Technical Perspective on our Article written by Jennifer Rexford (Princeton University).
2021-06paperNew paper: A Questionnaire to Assess Virtual Conference Participation Experience (talk video) to appear at IEEE QoMEX 2021.
2021-04paperNew paper analyzing blacklists appeared at IEEE TNSM (Special Issue on Cybersecurity)
2021-03miscI’ll be happy to serve a General Chair for TMA 2021
2021-03miscPAM 2021 will be ongoing this week, join for free and enjoy a terrifc program: https://www.pam2021.b-tu.de/
2020-12miscI am named a senior member of the Association for Computing Machinery (ACM). ACM senior membership is a recognition of demonstrated excellence in the computing field and one of the society’s prestigious member grades. The honor recognizes ACM’s top 25% of professional members who have been technical and/or professional leaders in the community for more than 10 years.
2020-12talkInternet User Behavior During COVID-19 I presented our current #COVID-19 Internet research as 50 min invited talk at IEEE ICOSST. The talk covers our work on virtual conference experience, contact tracing apps, and COVID impacts on internet traffic: Video https://youtu.be/oiltqixoJRc
2020-12miscOur study on the effect of COVID-19 on Internet Traffic (IMC'20) was widely covered by the German media: Interview with me by the Lausitzer Rundschau - LR cover page,
zeit.de, sueddeutsche, stern, handelsblatt, …
Radio Report by Puls Radio @ Bayrischer Rundfunk
2020-10miscOur master student Nabil Abo Nasser is awarded with this years DAAD award for outstanding achievements of international students studying at German universities - congratulations!

Awards

Projects

Principal Investigator:AIDOS: Artifical Intelligence-based DDoS Mitigation at Internet Exchange Points
2019 - 2022
Joint project with the DE-CIX Internet Exchange Point
Funded by the BMBF
Principal Investigator: DFG Collaborative Research Center SFB 1053 MAKI
MAKI – Multi-Mechanisms Adaptation for the Future Internet
2017-2020 (Entry in GPRIS project database)
The project provides funding for 1 PhD position
Principal Investigator:COMTEX: Context in Anonymous Short Texts
2018 - 2019
Joint project with linguistics and sociology on social network analysis.
Funded by the Excellence Initiative of the German federal and state governments
Principal Investigator: Internet Observatory
2018 - 2019
Funded by the Excellence Initiative of the German federal and state governments
Principal Investigator and member of the general assembly: SSICLOPS
Scalable and Secure Infrastructures for Cloud Operations
(funded by the EU under Horizon 2020, 2015-2018)
The project provides funding for 2 PhD positions

Professional Services

Conference Organization

Habilitation/HDR Committees

PhD Committees

2022-01-24From the Edge to the Core: Towards Informed Vantage Point Selection for Internet Measurement Studies
Franziska Lichtblau
Max Planck Institut for Informatics / Universität des Saarlandes, Germany
2022-01-11tba
Francesca Soro
Politecnico di Torino, Italy
2021-09-24Making DNSSEC Future Proof
Moritz Müller
University of Twente, Netherlands
2021-07-12Analysis of Influencing Factors in Speech Quality Assessment using Crowdsourcing
Rafael Zequeira Jiménez
TU Berlin, Germany
2021-07-02Web Quality of Experience Measurement: Metrics, Methods and Tools
Alemnew Asrese
Aalto University, Finland
2020-12-15Debugging Modern Web Protocols video
Robin Marx
Hasselt University, Belgium
2019-12-18Improving Anycast with Measurements
Wouter de Vries
University of Twente, Netherlands
2019-06-13Dissecting HTTP/2 and QUIC: Measurement
Jawad Manzoor
UC Louvain, Belgium
2019-01-18Revisiting the Interplay of Inter-Domain Traffic and Routing Policies
Thomas Krenc
TU Berlin, Germany

Technical Program Committee Member

  1. 2022: SIGCOMM ACM SIGCOMM
  2. 2022: SIGMETRICS SIGMETRICS
  3. 2021: NetSoft IEEE Conference on Network Softwarization
  4. 2021: CoNEXT Student Workshop PhD student workshop
  5. 2021: TMA Network Traffic Measurement and Analysis Conference
  6. 2021: ANRW ACM/IRTF Applied Networking Research Workshop
  7. 2021: EPIQ Workshop on Evolution, Performance, and Interoperability of QUIC (EPIQ)
  8. 2021: QoMEX IEEE International Conference on Quality of Multimedia Experience
  9. 2021: GI IEEE Global Internet Symposium
  10. 2021: MALENE Machine Learning in Networking
  11. 2021: CoNEXT ACM International Conference on emerging Networking EXperiments and Technologies
  12. 2021: NoF IEEE International Conference on Networks of the Future (NoF)
  13. 2021: NFV-SDN IEEE NFV-SDN
  14. 2021: Networking IFIP Networking
  15. 2021: NoF IEEE International Conference on Networks of the Future (NoF)
  16. 2020: CoNEXT ACM International Conference on emerging Networking EXperiments and Technologies
  17. 2020: CoNEXT Student Workshop PhD student workshop
  18. 2020: SIGCOMM Posters/Demos ACM SIGCOMM Posters, Demos, and Student Research Competition
  19. 2020: EPIQ Workshop on Evolution, Performance, and Interoperability of QUIC (EPIQ)
  20. 2020: TMA Network Traffic Measurement and Analysis Conference
  21. 2020: PAM Passive and Active Measurement Conference
  22. 2020: NetSoft IEEE Conference on Network Softwarization
  23. 2020: NFV-SDN IEEE NFV-SDN
  24. 2020: QoMEX IEEE International Conference on Quality of Multimedia Experience
  25. 2020: NOMS IEEE/IFIP Network Operations and Management Symposium
  26. 2020: NoF IEEE International Conference on Networks of the Future (NoF)
  27. 2020: ITSec ITG Workshop on IT Security (ITSec)
  28. 2019: IMC ACM Internet Measurement Conference
  29. 2019: CoNEXT ACM International Conference on emerging Networking EXperiments and Technologies
  30. 2019: PAM Passive and Active Measurement Conference
  31. 2019: ICCCN IEEE International Conference on Computer Communications and Networks
  32. 2019: NetSoft IEEE Conference on Network Softwarization
  33. 2019: NFV-SDN IEEE NFV-SDN
  34. 2019: QoMEX IEEE International Conference on Quality of Multimedia Experience
  35. 2019: Internet-QoE Internet QoE Workshop
  36. 2019: QoE-Management International Workshop on Quality of Experience Management
  37. 2019: NetSys International Conference on Networked Systems
  38. 2019: SIGCOMM Posters/Demos ACM SIGCOMM Posters, Demos, and Student Research Competition
  39. 2019: EPIQ Workshop on Evolution, Performance, and Interoperability of QUIC (EPIQ)
  40. 2018: CoNEXT ACM International Conference on emerging Networking EXperiments and Technologies
  41. 2018: EPIQ Workshop on Evolution, Performance, and Interoperability of QUIC (EPIQ)
  42. 2018: CoNEXT Student Workshop PhD student workshop
  43. 2018: MIPR IEEE Conference on Multimedia Information Processing and Retrieval
  44. 2018: NetSoft IEEE Conference on Network Softwarization
  45. 2018: NFV-SDN IEEE NFV-SDN
  46. 2018: GI IEEE Global Internet Symposium
  47. 2018: CloudCom IEEE International Conference on Cloud Computing Technology and Science
  48. 2018: QoMEX IEEE International Conference on Quality of Multimedia Experience
  49. 2018: QoE-Management International Workshop on Quality of Experience Management
  50. 2018: Internet-QoE Internet QoE Workshop
  51. 2018: MobiArch Workshop on Mobility in the Evolving Internet Architecture
  52. 2018: SecSoN ACM SIGCOMM 2018 Workshop on Security in Softwarized Networks
  53. 2018: PAM Passive and Active Measurement Conference
  54. 2017: CAN Cloud-Assisted Networking Workshop
  55. 2017: ITC International Teletraffic Congress
  56. 2017: Internet-QoE Internet QoE Workshop
  57. 2017: QoMEX IEEE International Conference on Quality of Multimedia Experience
  58. 2017: NFV-SDN IEEE NFV-SDN
  59. 2017: CNSM NFV-SDN
  60. 2017: CloudCom IEEE International Conference on Cloud Computing Technology and Science
  61. 2017: DCC Workshop on Distributed Cloud Computing
  62. 2017: NetSoft IEEE Conference on Network Softwarization
  63. 2017: NetSys International Conference on Networked Systems
  64. 2016: NetSoft IEEE Conference on Network Softwarization
  65. 2016: CloudCom IEEE International Conference on Cloud Computing Technology and Science
  66. 2016: CAN Cloud-Assisted Networking Workshop
  67. 2016: MONAMI International Conference on Mobile Networks and Management
  68. 2016: ITC International Teletraffic Congress
  69. 2016: NFV-SDN IEEE NFV-SDN
  70. 2016: PQS International Workshop on Perceptual Quality of Systems
  71. 2016: ICCE IEEE International Conference on Consumer Electronics
  72. 2016: Man SDN/NFV International Workshop on Management of SDN and NFV Systems
  73. 2015: SCRUM Strategies for Consistency, Replication, and Understandability in Middleware
  74. 2015: Man SDN/NFV International Workshop on Management of SDN and NFV Systems
  75. 2015: MONAMI International Conference on Mobile Networks and Management
  76. 2015: DCC Workshop on Distributed Cloud Computing
  77. 2015: QCMan IFIP/IEEE Workshop on QoE Centric Management
  78. 2015: CloudCom IEEE International Conference on Cloud Computing Technology and Science
  79. 2014: MONAMI International Conference on Mobile Networks and Management
  80. 2013: WNM Workshop on Internet Measurement
  81. 2013: STEM
  82. 2010: ATNAC The Australasian Telecommunication Network Application Conference
  83. 2010: IWQoS IEEE International Workshop on Quality of Service
  1. ANRW: 2021
  2. ATNAC: 2010
  3. CAN: 2016 2017
  4. CNSM NFV-SDN: 2017
  5. CloudCom: 2015 2016 2017 2018
  6. CoNEXT: 2018 2019 2020 2021
  7. CoNEXT Student Workshop: 2018 2020 2021
  8. DCC: 2015 2017
  9. EPIQ: 2018 2019 2020 2021
  10. GI: 2018 2021
  11. ICCCN: 2019
  12. ICCE: 2016
  13. IMC: 2019
  14. ITC: 2016 2017
  15. ITSec: 2020
  16. IWQoS: 2010
  17. Internet-QoE: 2017 2018 2019
  18. MALENE: 2021
  19. MIPR: 2018
  20. MONAMI: 2014 2015 2016
  21. Man SDN/NFV: 2015 2016
  22. MobiArch: 2018
  23. NFV-SDN: 2016 2017 2018 2019 2020 2021
  24. NOMS: 2020
  25. NetSoft: 2016 2017 2018 2019 2020 2021
  26. NetSys: 2017 2019
  27. Networking: 2021
  28. NoF: 2020 2021 2021
  29. PAM: 2018 2019 2020
  30. PQS: 2016
  31. QCMan: 2015
  32. QoE-Management: 2018 2019
  33. QoMEX: 2017 2018 2019 2020 2021
  34. SCRUM: 2015
  35. SIGCOMM: 2022
  36. SIGCOMM Posters/Demos: 2019 2020
  37. SIGMETRICS: 2022
  38. SecSoN: 2018
  39. TMA: 2020 2021
  40. WNM: 2013

Journal Reviews

  1. 2011, 2014, 2015, 2016, 2017, 2019 IEEE COMMAG (IEEE Communications Magazine)
  2. 2012, 2016, 2017 IEEE TNSM (IEEE Transactions on Network and Service Management)
  3. 2014, 2015, 2016 Springer Mobile Networks and Applications (journal)
  4. 2010, 2011, 2012, 2020 TON (IEEE/ACM Transactions on Networking)
  5. 2014, 2015 ACM SIGCOMM CCR (ACM SIGCOMM Computer Communication Review)
  6. 2016, 2017 ACM TOIT (ACM Transactions on Internet Technology)
  7. 2017 ACM TOMM (ACM Transactions on Multimedia Computing Communications and Applications)
  8. 2017 Springer MTAP (Spinger Multimedia Tools and Applications)
  9. 2017 Elsevier PMC (Elsevier Pervasive and Mobile Computing)
  10. 2015 IEEE TVT (IEEE Transactions on Vehicular Technology)
  11. 2014 IEEE COMPUTER ()
  12. 2020 COMNET (Elsevier Computer Networks)
  13. 2013 COMCOM (Elsevier Computer Communications)
  14. 2011 IEEE J-SAC (IEEE Journal on Selected Areas in Communications)
  15. 2010 AEÜ (International Journal of Electronics and Communications)
  16. 2010 IEEE ToB (IEEE Transactions on Broadcasting)
  17. 2010 AoT (Annals of Telecommunications)
  18. 2009 IEE TMM (IEEE Transactions on Multimedia)

Recent Invited Talks

2020-12-16Internet User Behaviour During COVID-19 video
IEEE ICOSST Invited Talk
2020-11-09The Lockdown Effect: Implications of the COVID-19 Pandemic on Internet Traffic video
Internet Architecture Board COVID-19 Network Impacts Workshop
2020-10-21Online Labor - Wir bauen gemeinsam ein Miniatur-Internet video
BTU Tag der Lehre 2020 - Gute Lehre im Online-Semester
2019-09-16DDoS Hide & Seek: On the Effectiveness of a Booter Services Takedown slides
Munich Internet Research Retreat
2019-07-08Is the Web ready for HTTP/2 Server Push?
Research colloqium talk, University of Goettingen, Germany
2019-06-13Is the Web ready for HTTP/2 Server Push?
Université catholique de Louvain, Belgium
2019-03-20Is the Web ready for HTTP/2 Server Push? video
Netsys 2019, Outstanding Paper session
2018-11-06Designing data-driven systems: measurement, analysis
Guest lecture, CSCI-2952-E, Brown University, USA
2017-11-30Understanding the Usage of New Internet Protocols in the Wild slides
Munich Internet Research Retreat Raitenhaslach
2017-08-21Quality of Experience Demystified Keynote Talk
Keynote talk ACM SIGCOMM Internet-QoE
2017-08-17How HTTP/2 pushes the web: An empirical study on utilization and QoE perspective on Server Push
International Computer Science Institute, Berkeley, USA
2016-02-29Kernel Accelerated Packet Processing
Invited talk, 1st ITN CleanSky Conference Heidelberg
2015-09-24Measuring and Optimizing the Cloud
Invited talk, ITG 5.2.1 Cloud Workshop, University of Tuebingen
2015-09-16Invited workshop: Scientific Writing
ITN CleanSky Summer School 2015, University of Goettingen
2015-08-20An Internet Census Taken by an Illegal Botnet
Invited talk, Academic Centre of Excellence for Cyber Security Research at University College London
2015-04-15Software Defined Networking & Network Functions Virtualization
invited talk 12. Sitzung des ITG-Fachausschusses 3.3 Übertragungstechnologien für elektronische Medien
2015-04-14On the origins of spam
Invited seminar talk, Project Leonardo RWTH Aachen
2014-11-14On the origins of spam
RWTH Science Night

Other

Teaching

SummerWinter
2020
2019
2018Internet Architecture and Performance
2017Internet Architecture and Performance
RWTH Aachen University: As Lecturer (Lehrbeauftragter):RWTH Aachen University:TU Berlin: As Teaching AssistentUniversity of Applied Sciences Darmstadt: As Teaching Assistent
Oliver Hohlfeld Photo

Address:
Oliver Hohlfeld
Brandenburg University of Technology
Chair of Computer Networks
Konrad-Wachsmann-Allee 5
03046 Cottbus, Germany
Map
Email: oliver dot hohlfeld at b-tu /DOT/ de
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Chair of Computer Networks
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Publications
DBLP
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Netray Internet Observatory

netray.IO
QUIC Adoption
HTTP2 Adoption
TCP Initial Window Configurations
Certificate Authority Authorization (CAA)

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