Abstract
Web services and Service oriented architecture are innovative phase of distributed computing, build on top of the distributed computing models. Web services are being used mostly for the integration business components. One of the key concerns in web services and service oriented architecture is implementation of adequate security. Security issues in SOA are still probing and in spite of an increase in web service research and development, many security challenges remain unanswered. This chapter introduces the vulnerabilities, threats associated with web services and addresses WS-Security standards and countermeasures. Web service protocol is designed to provide connectivity. Not any of these standards of web services contain any inbuilt security aspect of their own. Web Services are exposed to attack from common Internet protocols and in addition to new categories of attacks targeting Web Services in particular. Consequently, the aim of this chapter is to provide review of security mechanism in web services.
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