Hacking in the modern information society

(English): This bachelor thesis is oriented on description of hacking in modern information society and its goal is an overview of the current situation of hacking, whose techniques differ and change during the time. In the theoretical part this bachelor thesis focuses on differentiation of internet crimes and then the thesis focuses closely on hacking of web applications in terms of the user and also in terms of the application architecture. In the practical part the thesis is oriented on a description of a real life hacking attack. As this attack was chosen an issue of Czech ex prime minister Bohuslav Sobotka, whose private e-mail account got hacked in 2016. In terms of this practical part the thesis describes a possible way of the hacker and also a tool, which some of the Czech media mentioned as the tool that was used within this attack. Lastly the thesis in the practical part describes the security risks and also the topic of growing complexity and difficulty of defence against hacking attacks, which can possibly cause issues to the user. Keywords (english): Hacking, password cracking, web applications, security, World Wide Web, penetration testing, authenticatio