News & Blog

Today, Felix presented our new publication on Iranian HTTP and DNS censorship at the Virtual FOCI 2025.

Read more

Using Unencrypted HTTP/2 to Circumvent Censorship

Read more

On the 15th July 2024, Niklas presented our new publication on censorship circumvention with HTTP request smuggling in Bristol at the Free and Open Communications on the Internet conference 2024 (Summer FOCI'24).

Read more

Last week, Jost presented his work on the security of the 3MF file in Hong Kong at the 26th International Symposium on Research in Attacks, Intrusions and Defenses (RAID 2023). Some impressions from the journey:

Read more

Three of the students who have written their thesis with us won an award for outstanding theses in the context of IT security. We congratulate Marten Schmidt on his third place with the topic of “Analyzing the QUIC Ecosystem With the QUIC-Scanner” in the “Master’s Thesis” category, Philipp Breuch on another third place in the category “Bachelor’s Thesis” with the topic “Web Key Directory and other key exchange methods for OpenPGP”, and Niklas…

Read more

How Fragmentation Can Be Extended to the TLS Layer

Read more

A Large-Scale Analysis of Cryptographic Dangers with TLS Session Tickets

Read more

As a part of the "Frühlings-Uni", Juraj has held a presentation on the importance of IT security and presented CTFs.

Read more

a security analysis on the OpenPGP key exchange method Web Key Directory

Read more

an overview of the usage of different file formats used for 3D printing

Read more

Two of the students who have written their thesis with us won an award for outstanding theses in the context of IT security. We congratulate Simon Nachtigall on his first place with the topic of “Evaluation of TLS session tickets” in the “Master’s Thesis” category and Nico Heitmann on another first place in the category “Bachelor’s Thesis” with the topic “Security Analysis of the Web Conferencing System BigBlueButton”.

Read more

Do you use S/MIME or OpenPGP to secure your emails? Do you think that validating e-mail signatures is easy? If your answer is yes, you should take a look at our study published together with our colleagues from Karlsruhe Institute of Technology, Münster University of Applied Sciences, and Ruhr University Bochum.

Read more

Together with our colleagues from the Ruhr University Bochum, we have published our paper on combinatorial testing of TLS implementations. The paper is presented at USENIX Security in Boston this week.

Read more