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The Internet of Things (IoT) comprises a diversity of heterogeneous objects that collects data in order to disseminate information to applications. The IoT data dissemination service can be tampered by several types of attackers. Among these, the Sybil attack emerged as the most critical since it operates in the data confidentiality. Although there are approaches against Sybil attack in several services,...
Ensuring identity management (IdM) systems availability plays a key role to support networked systems. Denial-of-Service (DoS) attacks can make IdM operations unavailable, preventing the use of computational resources by legitimate users. In the literature, the main countermeasures against DoS over IdM systems are based on either the application of external resources to extend the system lifetime...
Firewalls are the first defense line for the networking services and applications. With the advent of virtualization and Cloud Computing, the explosive growth of network-based services, investigations have emphasized the limitations of conventional firewalls. However, despite of being impressively significant to improve security, cloud-based firewalling approaches still experience severe performance...
In Vehicular Ad-hoc Networks (VANETs), node authentication is an inherent problem since nodes enter and leave the network freely. In wireless networks, the management of identities becomes important because of the propagation medium, where problems such as the loss of node's privacy, the disclosure of personal information, and particularly identity theft and impersonation should be avoided. This paper...
The Internet as a platform for ubiquitous communication has quickly advanced in the last years. New services have emphasized the limits of the current Internet and motivated the development of the Future Internet. Future communication infrastructures intend to be more distributed and, ideally, more secure, resulting in high complexity. Further, as new technologies emerge, new requirements and security...
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