Web Services Security Challenges Based on underlying technologies that already have security challenges Web services complexities pose new potential problems Concerns with security standards and their adoption by system and component vendors Overlapping and possibly incompatible standards

Web services architectural layers

Web services standards Standards for describing, discovering, and invoking web services Based on XML Represent data totally independent of application, protocol, vocabulary, OS, programming language Described using XML schema Standards organizational committees: World wide web consortium (W3C) Organization for the advancement of structured information standards (OASIS) Web services interoperability (WS-I) organization Liberty alliance Internet engineering task force (IETF)

Layers and web services standards

Web services security standards Several security-related specifications for providing security for web Services including: WS-Security Web Services Security Addendum WS-Security Policy WS-Trust WS-Secure Conversation Web Services Security Profile for XML-based Tokens WS-Federation WSPL (Web Services Policy Language) The Liberty Alliance Project These security protocols can bind to Web services messaging protocols Designed to be modular and composable, to allow developers to use just the required capabilities Key to the success of Web services is open standards and interoperability among service providers

Layers and web services security standards