Social environments were already present in the original Web vision, but nowadays are mainly available through Online Social Networks (OSNs), which are a real cultural phenomenon. However, their actual deployment is very heterogeneous, reflecting into different development choices and functional architectures. Such aspects, jointly with the intrinsic sharing of personal information, lead to sev...

Recently, the need of monitoring both real and virtual environments is growing up, especially in security contexts. Virtual environments are rich of data produced by human interactions that can not be extracted using classical physical sensors. Thus, new kind of sensors allow to obtain and collect a huge quantity of data from these virtual environment. In order to monitor complex environments, ...

Computing systems have steadily evolved into more complex, interconnected, heterogeneous entities. Ad-hoc techniques are most often used in designing them. Furthermore, researchers and designers from both academia and industry have focused on vertical approaches to emphasizing the advantages of one specific feature such as fault tolerance, security or performance. Such approaches led to very sp...

This paper describes the security architecture of the IRO-DB database federation, a system supporting interoperable access between relational and object-oriented databases. The security policy developed is a federated, administrative, discretionary access control policy supporting positive, negative, as well as implied authorizations. It includes a procedure for conflict resolution within the s...

Datacenters for cloud infrastructure-as-a-service (IaaS) consist of a large number of heterogeneous virtual resources, such as virtual machines (VMs) and virtual local area networks (VLANs). It takes a complex process to manage and arrange these virtual resources to build particular computing environments. Misconfiguration of this management process increases possibility of security vulnerabili...

We use a compositional framework to model security architectures involving heterogeneous and distributed security functions. Our goal is to assist the ITSEC evaluation of suitability, binding and vulnerability of a set of security functions. We propose constraints that security functions should guarantee in order to interact consistently and securely with other functions. To illustrate these no...

This paper presents solutions for security context transfer for vertical handover between heterogeneous networks. Seamless vertical handover is an important function of Beyond 3G systems. Context transfer can help support seamless vertical handover while maintaining required security level. So as to come to solutions for security context transfer, this paper first analyses trust relationship be...

The systematic processes exactly define the development cycle and help the development team follow the same development strategies and techniques, thus allowing a continuous improvement in the quality of the developed products. Likewise, it is important that the development process used integrates security aspects from the first stages at the same level as other functional and non-functional re...

Nowadays, autonomous vehicles are incorporated into farms to facilitate manual labour. Being connected vehicles, as IoT systems, they susceptible cyber security attacks that try cause damage hardware, software or even living beings. Therefore, it is important provide sufficient mechanisms protect both the communications and data, mitigating any possible risk harm farmers, livestock crops. Techn...

An integrated security mechanism is one of the key challenges in the open wireless network architecture because of the diversity of the wireless network in open wireless network and the unique security mechanism used in each one of these networks. Optimized security protocols and mechanisms are necessary for the high performance and security concerns. Finally, a challenge and requirement of adv...