Pontus Johnson

Professor of cyber security and software architecture at KTH

Cyber security assessment with attack simulations

Abstract

Attack simulations may be used to assess the cyber security of systems. In such simulations, the steps taken by an attacker in order to compromise sensitive system assets are traced, and a time estimate may be computed from the initial step to the compromise of assets of interest. Attack graphs constitute a suitable formalism for the modeling of attack steps and their dependencies, allowing the subsequent simulation. To avoid the costly proposition of building new attack graphs for each system of a given type, domain-specific attack languages may be used. These languages codify the generic attack logic of the considered domain, thus facilitating the modeling, or instantiation, of a specific system in the domain. Examples of possible cyber security domains suitable for domain-specific attack languages are generic types such as cloud systems or embedded systems but may also be highly specialized kinds, e.g. Ubuntu installations; the objects of interest as well as the attack logic will differ significantly between such domains. In this talk, we present the Meta Attack Language (MAL), which may be used to design domain-specific attack languages such as the aforementioned. The MAL provides a formalism that allows the semi-automated generation as well as the efficient computation of very large attack graphs.

Bio

Pontus Johnson is a professor at the Royal Institute of Technology (KTH) in Stockholm, Sweden. His research interests mainly lie in the area of cyber security and the analysis of architectural models of computer networks. Pontus supervises a number of PhD students and holds courses on Ethical Hacking. He received his MSc from the Lund Institute of Technology in 1997 and his PhD and Docent titles from the Royal Institute of Technology in 2002 and 2007. He was appointed professor in 2009. Since 2013, he is a member of the Swedish Royal Academy of Engineering Sciences (IVA). He has chaired and co-chaired a number of international conferences and workshops and participated in program committees in over fifty such events. He is a member of the steering committee of the IEEE Enterprise Computing Conference (EDOC). He has been associate and guest editor to several journals. He has authored over 100 scientific articles, mainly on the prediction of information security and other non-functional properties in software-intensive system architectures. Much work is directed toward the security of critical infrastructures. Significant research is also aimed at enterprise-wide information systems of a more general kind. In research, he has much contact with Swedish corporations and organizations in the form of research projects, master thesis projects, seminars, and consultations. He is a member of the IVA Medal Committee. Pontus is also a co-founder of foreseeti, a research spin-off company developing cyber security attack simulation software.