Security of Web services based service-oriented architectures

Service-oriented architectures (SOA) as a new form of information system (IS) architectures is more and more important in todays IS development. Some researchers are pointing out that the number of SOA implementations in the next few years will significantly outnumber the number of traditional IS architectures implementations. One of the reasons for this are the possibilities that SOA and technologies used for SOA development are offering. Today's SOA are mostly based and developed using Web services technology. Because of that SOA inherits multiple advantages and disadvantages of Web services technology as well. This is especially important in the context of SOA security issues that somehow differ from “traditional” information system security principles.