Cross-organizational service security: attack modeling and evaluation of selected countermeasures

Challenging market dynamics and the rise of complex value networks require organizations to adjust their processes rapidly in order to stay competitive. Because many organizational processes are directly supported or even enabled by Information Technology (IT), a process is only as flexible as its underlying technological representation. The Service-oriented Architecture paradigm (SOA) offers means on both a technological and organizational level for the flexible integration of internal and external IT systems. Thus, services are used to assemble processes through service compositions, as well as across enterprise boundaries. Such cross-organizational service-based workflows lead to a global SOA which is often referred to as the "Internet of Services".