Research
I'm interested in the intersection between computer security, privacy, and human rights. In my work I try to contribute to a more sustainable society at this intersection.
My research revolves around traffic analysis, anonymity and cybersecurity.
Teaching
Course responsible Internet Security and Privacy. Supervision of Bachelor's, Master's, and PhD-level projects.
Collaboration
Core Member of the Tor Project. Board member of DFRI.
Bio
A cybersecurity researcher in the forests of Värmland, Sweden, that cares deeply about privacy, human rights, and democracy. Working as a senior lecturer (docent ≈ associate professor) in Computer Science at Karlstad University, Sweden. I have collaborated on a range of topics in projects funded by EU {H2020, FP6, FP7, TEMPUS}, Google, Mullvad VPN, the NLnet Foundation, the Swedish Foundation for Strategic Research, the Swedish Internet Foundation, the Swedish Knowledge Foundation, and more. An engineer and scientist at heart—and trying not to forget that—by building as well as understanding things. Recovering applied cryptographer trying to broaden my horizons.
Selected publications
- Rasmus Dahlberg and Tobias Pulls. Timeless Timing Attacks and Preload Defenses in Tor’s DNS Cache. USENIX Security 2023.
- Rasmus Dahlberg, Tobias Pulls, Tom Ritter, and Paul Syverson. Privacy-Preserving & Incrementally-Deployable Support for Certificate Transparency in Tor. PETS 2021.
- Tobias Pulls and Rasmus Dahlberg. Website Fingerprinting with Website Oracles. PETS 2020.
- Benjamin Greschbach, Tobias Pulls, Laura M. Roberts, Philipp Winter, and Nick Feamster. The Effect of DNS on Tor’s Anonymity. NDSS 2017.
- Tobias Pulls and Roel Peeters. Balloon: A Forward-Secure Append-Only Persistent Authenticated Data Structure. ESORICS 2015.
- Philipp Winter, Tobias Pulls, and Jürgen Fuß. ScrambleSuit: A Polymorphic Network Protocol to Circumvent Censorship. WPES 2013.