In 1992, Wolfgang Leidhold joined the Faculty of Economics and Social Sciences at the University of Cologne. His fields of research are political theory and the history of ideas, with the scope of his work extending from the Paleolithic to present day. Additionally, he deals with international relations, particularly in regards to security policy. He, likewise, concerns himself with the issues of communications, the internet, and ecology. Aside from numerous other research projects, he initiated and designed the development of the ILIAS learning platform – an open-source software which has been distributed worldwide.