XML is becoming the de facto business document interchange language for the Internet. Technologies such as SOAP and EBXML have been developed within the XML framework. Digital security standards and techniques are now being applied to XML, and to 'business webs' built using XML and Web Services. This presentation discusses these initiatives and the issues being encountered when applying security principles of confidentiality and non-repudiation to XML. The presentation looks at how Web Services can be applied in the Financial Services industry to provide for improved secure partner and customer integration for the delivery of products and services.