Security and Trustworthiness Threats to Composite Services: Taxonomy, Countermeasures, and Research Directions

Abstract. This chapter studies not only how traditional threats may affect composite services, but also some of the new challenges that arise from the emerging Future Internet. For instance, while atomic services may, in isolation, comply with privacy requirements, a composition of the same services could lead to violations due to the combined informa-tion they manipulate. Furthermore, with volatile services and evolving laws and regulations, a composite service that seemed secure enough at deployment time, may find itself unacceptably compromised some time later. Our main contributions are a taxonomy of threats for compos-ite services in the Future Internet, which organises thirty-two threats within seven categories, and a corresponding taxonomy of thirty-three countermeasures. These results have been devised from analysing ser-vice scenarios and their possible abuse with participants from seventeen organisations from industry and academia