... siteit, Amster dam XML Web Services Secu rity Slide2_11 Web services features – three stacks March 27, 2003 . Vrije Univer siteit, Amster dam XML Web Services Secu rity Slide2_12 Web Service Description ... Historical • XML Security • Web Services Security • OGSA Security • XML Web Services technology for IIDS - Discussion March 27, 2003 . Vrije Univer siteit, Amster dam XML Web Services Secu rity Slide2_3 ... </Signature> March 27, 2003 . Vrije Univer siteit, Amster dam XML Web Services Secu rity Slide2_9 XML Web Services A Web Service is a software system identified by URI, whose public interfaces...