Throughout my study in mathematics, I learned computer science, C, Linux, communication technology and entrepreneurship. Besides, physical problem solving, electrostatics, electrokinetics, and magnetostatics were also part of our main modules. Probability and statistics were also among our main courses. During my master’s program, I worked under the direction of Dr Christophe Petit. The Master project was about the index calculus algorithm for the Elliptic Curve Discrete Logarithm Problem (ECDLP). The attack reduces ECDLP to a particular class of polynomial systems, which are then solved using Groebner bases algorithms. The main goals during my master’s research were to investigate this attack, to make it works, analyse my results, and compare it to other attacks. In order to investigate the security of some cryptosystems using the discrete logarithm problem on elliptic curves, another goal was to exploit some unrecognised peculiarities of the problem and to new polynomial system representations which can be easily solved using the Groebner basis algorithm. We also extended the attack to elliptic curves dened over large characteristic. Also, I learned Sage, Python, C ++, R, Magma, Matlab, Maple, mathematical problem solving, numerical problem solving and modelling, numerical simulations, statistics with R during my master study. Linux was our primary operating system. Since 1.09.2015, I am working with Prof.dr. Martin Kreuzer, who is also my PhD supervisor. I am specialising in cryptography. We work on Cryptanalysis of useful Cryptosystems. Using software simulations, we apply fault injections and we find some attacks which help to break secure cryptosystems. The project is a joint project with two other groups: one group is in the University of Stuttgart, and the other is in the University of Freiburg. I have developed a very high level of adaptability and teamwork. I am a quick learner, very motivated, and I have proven to be able to work independently.