Forenzní vyšetřování podvodů v decentralizovaných financích

This thesis is devoted to forensic investigation of fraud in decentralized finance based on an analysis of selected incidents. The purpose of the work is to forensically analyze selected DeFi incidents, identify typical patterns of fraud and key indicators of compromise, and, on this basis, formulate recommendations for the practice of forensic specialists, auditors, and operators of DeFi protocols. The theoretical part defines the concept of DeFi, describes the main types of DeFi protocols, risks, and types of fraud, and summarizes the possibilities of blockchain forensic analysis. Methodologically, the thesis applies a multiple-case study of selected incidents and combines qualitative and quantitative analysis of on-chain data. For each incident, the methods of attack or fraud, financial impacts, transaction flows, and specific indicators of compromise are examined. The subsequent comparative analysis across the cases identifies common features, differences, and the most significant indicators of compromise for individual types of fraud. The outcome is a set of recommendations for auditors, forensic specialists, and operators of DeFi protocols focused on the design of control mechanisms, risk monitoring, and more effective incident response.