Volkmar Lotz, SAP Research, Germany


"Towards Accountable Services in the Cloud"



Short bio:

Volkmar Lotz has more than 20 years experience in industrial research on Security and Software Engineering. He is heading the Security & Trust practice of SAP Research, a group of 40+ researchers investigating into applied research and innovative security solutions for modern software platforms, networked enterprises and Future Internet applications. The Security & Trust practice defines and executes SAP's security research agenda in alignment with SAP's business strategy and global research trends.

Volkmar’s current research interests include Business Process Security, Service Security, Authorisation, Security Engineering, Formal Methods and Compliance. Volkmar has published numerous scientific papers in his area of interest and is regularly serving on Programme Committees of internationally renowned conferences. He has been supervising various European projects, including large-scale integrated projects. Volkmar holds a diploma in Computer Science from the University of Kaiserslautern.



Accountability is a principle well suited to overcome trust concerns when operating sensitive business applications over the cloud. We argue that accountability builds upon transparency and control, and investigate in control of services in service-oriented architectures. Control needs to reach out to different layers of a SOA, both horizontally and vertically.
We introduce an aspect model for services that enables control on these layers by invasive modification of platform components and upon service orchestration. This is seen as a major constituent of an accountability framework for the cloud, which is the objective of an upcoming collaborative research project.