ABSTRACT, KEY WORDS Seizing digital tracks for the purpose of a criminal proceeding This thesis analyzes procedural institutes of law that serve to seize digital traces on the Internet to investigate cybercrime. This document also deals with a selected procedural institute of the Convention on Cybercrime, which serves to secure digital traces. Furthermore, an assessment is made as to whether the Czech legislation meets these requirements. Data retention analysis provided information on what traffic and location data are and describes the extent of their retention. The issue of identification of offenders based on seized IP addresses was explained and anonymization methods were explained. The main goal of the thesis is an extensive elaborati...