The development of the SESAME (Secure European System for Applications in a Multi-vendor Environment) security concept started approximately a decade ago. The flexibility and scalability properties, the focus on simple administration and the modular structure are some of the reasons why this architecture has formed the basis for several security products. This paper attempts to make a short summary of the SESAME development from its infancy to TrustedWeb, the latest solution particularly adapted for the administration and protection of Web-resources in large intra- and extranet environments.