The IT-Security Lab

Who we are:

Prof. Dr. Patrick Felke
M.Eng. Frederik Gosewehr

What we do:

Teaching and Training

  • Red- / Blue-Teaming
  • Cryptanalysis
  • Basic Pentesting
  • Professional IT-Training for Business and Industrial Customers


  • Crypto-Security and Pentesting, e.g. of wireless protocols like Zigbee or Z-Wave
  • Firmware Reverse Engineering
  • Symmetric Cryptography
  • Multivariate Cryptography
  • Boolean functions and more generally all the discrete structures in cryptography, coding theory and applications

Research Interests:

  • Post-Quantum Cryptography
  • Ransomware Analysis
  • Attacking Kerberos
  • Automated, machine learning based white/blackbox fuzzing