His research focuses on crime prevention, surveillance, forensics, and criminal investigations. He is the author of the first major Polish study on video surveillance and also the first study on evidence-based crime prevention. His books as well as other contributions are publicly available at http://uw.academia.edu/Pawe%C5%82Waszkiewicz. He is a visiting professor at several European and American universities: Univeristy of Ottawa, Rutgers University, University College London, Teesside Univesity, Malaga Universidad, and Allicante Universidad. The presentation will cover his most recent research project that deals with Open Source Intelligence (OSINT) in the practice of law enforcement agencies, especially using social media. The phenomenon of OSINT will be introduced and some initial findings from the Polish law enforcement survey will be presented.