"3TH1CS. A reinvention of ethics in the digital age?" identifies and discusses the most important ethical questions of our digital world. Autonomous weapons, artifical intelligence, algorithms: there are numerous ethical challenges with respect to the digital transition. What exactly is problematic? How should we handle these issues as a society? And where do we need to change our way of thinking? These questions will be addressed in twenty independent chapters written by selected experts. Each contribution provides different insights, ideas or first answers, aiming to spark a discourse that will keep us busy for years to come.