1. Group of Analysis, Security and Systems (GASS)Department of Software Engineering and Artificial Intelligence (DISIA)Faculty of Computer ScienceOffice 431Universidad Complutense de Madrid (UCM)Calle Profesor José García Santesmases 9, Ciudad Universitaria28040MadridSpain
2. Telefónica I+Dc/Don Ramón de la Cruz, 82‐84Madrid28006Spain