A-SIT - Key Persons


Bernd Prünster

Job Titles:
  • Architecture Development
Bernd Prünster received his PhD degree in computer science from Graz University of Technology in 2021 and a master's degree in computer science from Graz University of Technology in 2016. He currently works as Senior IT Security Expert at A-SIT Plus, where he shaped the company's open-source strategy. With a decade of experience in professional software development and applied IT security research, he developed a keen sense of how and when to adopt emerging technologies for fun and profit.

Christian Paul Kollmann

Job Titles:
  • Architecture Development
Christian Kollmann received his Master's degree (Dipl.-Ing.) in Computer Science from Graz University of Technology where he specialized in IT Security and Software Development. He currently works as a Senior IT Security Expert at A-SIT Plus, where he focuses on design and implementation of secure systems in mobile and cloud environments.

Christof Rabensteiner

Job Titles:
  • Architecture Development
Christof Rabensteiner completed his MSc at ISEC (formerly IAIK), Graz University of Technology. He developed IT security experience after multiple years performing research and software development with a focus on eGovernment. Christof currently works as an IT Security Expert at A-SIT Plus.

Dipl.-Ing. Herbert Leitold

Job Titles:
  • Director - General

Dr. Arne Tauber

Job Titles:
  • Secretary - General

Felix Hörandner

Job Titles:
  • Consulting Coordination Architecture
  • Senior IT Security Expert at a - SIT Plus
Felix Hörandner is working as Senior IT Security Expert at A-SIT Plus. He holds a PhD degree in Computer Science from Graz University of Technology. After joining ISEC (formerly IAIK) in 2015, he also worked at the Austrian E-Government Innovation Center (EGIZ) and Secure Information Technology Center Austria (A-SIT). His main research interests lie at the intersection of cloud computing, identity management, data sharing, and advanced cryptographic mechanisms with the aim of achieving user-friendly solutions.

Manfred Scheucher

Job Titles:
  • Architecture Development
  • IT Security Expert at a - SIT Plus
Manfred Scheucher is working as an IT Security Expert at A-SIT Plus. After his studies in Computer Science and Technical Mathematics at TU Graz, he completed a PhD in Mathematics and led a DFG-funded project at TU Berlin, where he specialized in combining classic mathematical concepts with computer-assisted proving techniques - particularly SAT solvers - and the power of computing clusters.

Peter Teufl

Job Titles:
  • CEO Consulting Coordination Architecture
  • Founder and CEO of a - SIT Plus GmbH
Peter Teufl serves as the founder and CEO of A-SIT Plus GmbH, specializing in information security and cryptography. After completing his PhD in 2012 at ISEC (formerly IAIK), he established A-SIT Plus as a spin-off company of the A-SIT association.

Thomas Zefferer

Thomas Zefferer joined ISEC (formerly IAIK) in 2007. He is Senior IT Security Expert at A-SIT Plus as well as a director of SIC (Stiftung Secure Information and Communication Technologies). He holds a PhD degree in Computer Science from Graz University of Technology. Thomas's primary expertise is in security analyses, e-government, and mobile security.