Rafael Timóteo de Sousa Júnior obtained a BSc in Electrical Engineering from the Federal University of Paraíba – UFPB in 1984, an MSc in Computing and Information Systems from the Ecole Supérieure d'Electricité – Supélec in 1984-1985 and a PhD in Telecommunications and Signal Processing from the University of Rennes 1 in 1988. He was a visiting researcher with the Group for Security of Information Systems and Networks (SSIR) at the Ecole Supérieure d'Electricité – Supélec in 2006-2007. He worked in the private sector from 1988 to 1996. Since 1996, he has been a Network Engineering Associate Professor with the Electrical Engineering Department at the University of Brasília, Brazil, where he coordinates the Professional Post-Graduate Program on Electrical Engineering – Cybersecurity (PPEE) and supervises the Decision Technologies Laboratory (LATITUDE). He is chair of the IEEE VTS Centro-Norte Brasil Chapter (IEEE VTS Chapter of the Year 2019) and of the IEEE Centro-Norte Brasil Blockchain Group. He is a researcher with the Productivity Fellowship Level 2 (PQ-2) granted by the Brazilian National Council for Scientific and Technological Development (CNPq). He has developed research in cyber, information, and network security; distributed data services; and machine learning for intrusion and fraud detection, as well as signal processing, energy harvesting, and security at the physical layer.