The computer program has recently become a common part of everyday life of the modern society whereas the life and work are very hard to imagine without them. Computer program's right infringement, software piracy, is a very specific phenomenon, which, according to my opinion, deserves thorough processing. This thesis is trying to support specialized publications with facts especially from the area of functional aspects of warez scene and its connection with common users of pirate programs, emphasizing single pirate methods, the structure and legal analysis of important aspects of this phenomenon. This thesis consists of nine chapters, which are further divided with respect to the single topics. Chapter One is an introduction into the topic and adumbrates basic problems of software piracy. Chapter Two attends to the computer program and software. The first part distinguishes the terms software and computer program, the second part displays basic sources of computer programs legal regulation, part three characterizes the computer program as a special type of author's craft, the fourth part describes contractual and non-contractual usage of computer programs, the fifth part explains the topic of digital rights management and the last, the sixth part represents analysis of legal protection of computer...