We present WebSOS, a novel overlay-based architecture that provides guaranteed access to a web server that is targeted by a denial of service (DoS) attack. Our approach exploits t...
William G. Morein, Angelos Stavrou, Debra L. Cook,...
Security services in a multi-user environment are often based on access control mechanisms. Static of an access control policy can be formalised using abstract algebraic models. W...
We describe a novel approach for building a secure and fault tolerant data storage service in collaborative work environments, which uses perfect secret sharing schemes to store d...
Classic security systems use a trust model centered in the authentication procedure, which depends on a naming service. Even when using a Public Key Infrastructure as X.509, such s...
Altair Olivo Santin, Joni da Silva Fraga, Carlos M...
Several description frameworks to semantically describe and match services on the one hand and service requests on the other have been presented in the literature. Many of the curr...