Dr. Vasilis Ververis
Areas of Research
Internet censorship and censorship circumvention
Internet measurement and network behavior
Security and surveillance technologies
Privacy and information controls
Technical Aspects of Internet Infrastructure
Biography
Dr. Vasilis Ververis is a researcher at the Hasso Plattner Institute, University of Potsdam, whose work focuses on internet measurement, internet censorship, security, and privacy. He completed his PhD on internet censorship in the European Union at Humboldt University in Berlin, after earning an M.Sc. in Network Services and Systems from KTH Royal Institute of Technology in Stockholm.
His research focuses on the dynamics of digital control, network interference, and information access across diverse geopolitical contexts. He has studied censorship practices and measurement methods in Europe and beyond, contributing to work on blocked services, encrypted communications, and tools for monitoring Internet openness over time.
Teaching
Research Design and Methods (M. Sc., lecture course), Hasso Plattner Institute at University of Potsdam, 2026
Reproducing Internet Measurement Research (M. Sc., project seminar), Hasso Plattner Institute at University of Potsdam, 2025
Internet Incident Tracker (M. Sc., Project), Hasso Plattner Institute at University of Potsdam, 2025
Internet Censorship Tracker (M. Sc., Project), Hasso Plattner Institute at University of Potsdam, 2024 -2025
Modern and Secure Internet: Design and Operations (M. Sc., lecture course), Hasso Plattner Institute, 2024 - 2025
Trends in Internet Measurements (M. Sc., project seminar), Hasso Plattner Institute at University of Potsdam, 2024 - 2025
IT Security and Privacy (M. Sc., lecture course), Humboldt University Berlin, 2014 - 2016
IT Security and Privacy (M. Sc., project seminar), Humboldt University Berlin, 2014 - 2019, 2023 - 2024
Publications
Bielefeld, Philipp, Hoffmann, Felix, Sassalla, Steffen, Ververis, Vasilis, and Ba-
jpai, Vaibhav. Mar. 23–25, 2026. “The Future of DNS Privacy: A Comparison of
DNS over QUIC and DNS over HTTP/3”. In: Proceedings of the Passive and Ac-
tive Measurement Conference 2026 (PAM 2026). Best Community Contribution
Award. url: https://pam2026.at/.
Richter, Robert, Ververis, Vasilis, and Bajpai, Vaibhav. May 2025. “Breaking
Through the Clouds: Performance Insights into Starlink’s Latency and Packet
Loss”. In: Proceedings of the IFIP Networking Conference. Limassol, Cyprus.
Sassala, Steffen, Ververis, Vasilis, and Bajpai, Vaibhav. May 2025. “A First Look
on Discovery of Designated Resolvers”. In: Proceedings of the IFIP Networking
Conference. Limassol, Cyprus.
Ververis, Vasilis, Sassala, Steffen, Roth, Felix, and Bajpai, Vaibhav. July 2025.
“Path to Encrypted DNS with DDR: Adoption, Configuration Patterns, and Pri-
vacy Implications”. In: Proceedings on Privacy Enhancing Technologies, pp. 465–
484.
Ververis, Vasilis, Lasota, Lucas, Ermakova, Tatiana, and Fabian, Benjamin.
2024. “Website blocking in the European Union: Network interference from the
perspective of Open Internet”. In: Policy & Internet 16.1, pp. 121–148.
Ververis, Vasilis. 2023. “Internet censorship in the European Union”. PhD the-
sis. Humboldt-Universit¨at zu Berlin, Wirtschaftswissenschaftliche Fakult¨at. doi:
Ververis, Vasilis, Ermakova, Tatiana, Isaakidis, Marios, Basso, Simone, Fabian,
Benjamin, and Milan, Stefania. 2021a. “Understanding internet censorship in eu-
rope: The case of spain”. In: Proceedings of the 13th ACM Web Science Conference
2021, pp. 319–328.
Weber, Valentin and Ververis, Vasilis. 2021b. “China’s surveillance state: A
global project”. In: PrivacyCo, Digital Rights Research Grant, The Hague, Nether-
lands.
Lee, Hee-Eun, Ermakova, Tatiana, Ververis, Vasilis, and Fabian, Benjamin.
2020a. “Detecting child sexual abuse material: A comprehensive survey”. In: Foren-
sic Science International: Digital Investigation 34, p. 301022.
Miljanovic, Morana, Ververis, Vasilis, and Wissenbach, Kersti. Apr. 2020. “Tools
and tactics for data protection before, during and after fieldwork”. In: pp. 107–126.
isbn: 978-1-5297-0105-0.
Ververis, Vasilis, Fadelkon, Ana, Bita, and Samba. May 2020. Women on Web
website censored in Spain. url: https : / / blog . magma . lavafeld . org / post /
women-on-web-blocking/.
Ververis, Vasilis, Marguel, Sophia, and Fabian, Benjamin. 2020d. “Cross-Country
Comparison of Internet Censorship: A Literature Review”. In: Policy & Internet
12.4, pp. 450–473. doi: https://doi.org/10.1002/poi3.228.
Ververis, Vasilis, Isaakidis, Marios, Weber, Valentin, and Fabian, Benjamin.
2019. “Shedding light on mobile app store censorship”. In: Adjunct publication of
the 27th conference on user modeling, adaptation and personalization, pp. 193–198.
Ververis, Vasilis. 2018a. “Demistifying the dark web”. In: XRDS: Crossroads,
The ACM Magazine for Students 24.4, pp. 16–19.
Ververis, Vasilis and Wolf, Gunnar. July 2018. “Pseudonimity and anonymity
as tools for regaining privacy”. In: XRDS 24.4, pp. 7–8. issn: 1528-4972. doi:
10.1145/3220575. url: https://doi.org/10.1145/3220575.
Evdokimov, Leonid and Ververis, Vasilis. Nov. 2017. Identifying cases of DNS
misconfiguration: Not quite censorship. url: https : / / ooni . org / post / not -
quite-network-censorship/.
Fabian, Benjamin, Baumann, Annika, Ehlert, Mathias, Ververis, Vasilis, and
Ermakova, Tatiana. 2017b. “CORIA—Analyzing internet connectivity risks using
network graphs”. In: 2017 IEEE International Conference on Communications
(ICC). IEEE, pp. 1–6.
Ververis, Vasilis, Isaakidis, Marios, Loizidou, Chrystalleni, and Fabian, Ben-
jamin. 2017c. “Internet censorship capabilities in Cyprus: An investigation of on-
line gambling blocklisting”. In: E-Democracy–Privacy-Preserving, Secure, Intelli-
gent E-Government Services: 7th International Conference, E-Democracy 2017,
Athens, Greece, December 14-15, 2017, Proceedings 7. Springer, pp. 136–149.
Ververis, Vasilis, Khrustaleva, Olga, and Quiroz, Eliana. 2017d. “Network inter-
ference in Latin America: Evaluating network measurements to detect information
controls and Internet censorship”. In: 5º Simposio Internacional LAVITS— Vigi-
lancia, Democracia y Privacidad en Am´erica Latina: Vulnerabilidades y resisten-
cias.
Xynou, Maria, Ververis, Vasilis, Filast`o, Arturo, and Hassine, Wafa Ben. June
2017. #EgyptCensors: Evidence of recent censorship events in Egypt. url: https:
Basso, Simone, Anderson, Collin, Ververis, Vasilis, Filast`o, Arturo, Wagner,
Ben, Luconi, Valerio, and Morando, Federico. 2016a. “Internet measurements and
policy”. In: INTERNET POLICY REVIEW.
Evdokimov, Leonid and Ververis, Vasilis. Oct. 2016. Egypt: Media censorship,
Tor interference, HTTPS throttling and ads injections? url: https://ooni.org/
post/egypt-network-interference/.
Razaghpanah, Abbas, Li, Anke, Filast`o, Arturo, Nithyanand, Rishab, Ververis,
Vasilis, Scott, Will, and Gill, Phillipa. 2016c. Exploring the Design Space of Lon-
gitudinal Censorship Measurement Platforms. CoRR abs/1606.01979 (2016).
Ververis, Vasilis, Xynou, Maria, and Scott, Will. May 2016. OONI Data Reveals
How WhatsApp Was Blocked (Again) in Brazil. url: https://ooni.org/post/
brazil-whatsapp-block/.
Ververis, Vasilis, Kargiotakis, George, Filast`o, Arturo, and Afentoulis, Alexan-
dros. June 2015. EEEP and Greek Internet Censorship. url: https://ooni.org/
post/eeep-greek-censorship/.
Ververis, Vasilis, Kargiotakis, George, Filast`o, Arturo, Fabian, Benjamin, and
Alexandros, Afentoulis. 2015b. “Understanding internet censorship policy: The
case of greece”. In: 5th USENIX Workshop on Free and Open Communications on
the Internet (FOCI 15).
Ververis, Vasilis. 2010. “Security Evaluation of Intel’s Active Management Tech-
nology”. MA thesis. url: https://urn.kb.se/resolve?urn=urn:nbn:se:kth:
diva-91109.