---
title: "rgdd.se"
---
{{< figure class="avatar" src="img/author.jpg" alt="avatar">}}

Researcher and software engineer based in Karlstad, Sweden.  I earned my
[doctoral degree][] from [Karlstad University][].  My current workplace is
[Glasklar Teknik AB][], a sister company to [Mullvad VPN][].  I have a keen
interest for the overlap between research, development, and operations.  Some of
the topics that I am most passionate about include transparency logs, anonymity
networks, applied cryptography, and Linux.

[doctoral degree]: https://www.diva-portal.org/smash/get/diva2:1751660/FULLTEXT02.pdf
[Karlstad University]: https://www.kau.se/
[Glasklar Teknik AB]: https://www.glasklarteknik.se/
[Mullvad VPN]: https://www.mullvad.net/

When I am not immersed in the world of technology, you will likely find me honing
my culinary skills, socializing with friends, going out on walks, hitting the
gym for weightlifting sessions, or showering my beloved cat with affection.

# Project involvement 

I am a core member of the following projects:

  - [Sigsum][]: a free and open source software project that makes a signer's
  key-usage transparent.  It can be used as a building block to secure the
  supply chain and more.
  - [System Transparency][]: an open source project that provides a security
  architecture for bare metal servers.  A system's entire boot chain becomes
  protected and auditable.
  - [Tor][]: a 501(c)(3) US nonprofit that advance human rights and defend online
  privacy through free software and open networks.

[Sigsum]: https://www.sigsum.org/
[System Transparency]: https://www.system-transparency.org/
[Tor]: https://www.torproject.org/

# Selected publications

  - Rasmus Dahlberg and Tobias Pulls.
  [Timeless Timing Attacks and Preload Defenses in Tor's DNS Cache](https://www.usenix.org/conference/usenixsecurity23/presentation/dahlberg).
  USENIX Security (2023)
  - Rasmus Dahlberg, Tobias Pulls, Tom Ritter, and Paul Syverson.
  [Privacy-Preserving \& Incrementally-Deployable Support for Certificate Transparency in Tor](https://petsymposium.org/2021/files/papers/issue2/popets-2021-0024.pdf).
  PETS (2021)
  - Tobias Pulls and Rasmus Dahlberg.
  [Website Fingerprinting with Website Oracles](https://petsymposium.org/2020/files/papers/issue1/popets-2020-0013.pdf).
  PETS (2020)
  - Tobias Pulls and Rasmus Dahlberg.
  [Steady: A Simple End-to-End Secure Logging System](https://eprint.iacr.org/2018/737.pdf).
  NordSec (2018)

# Contact

Feel free to reach out on email or other platforms as you see fit.