Thesis (M.S.)--Mississippi State University. Department of Computer Science and Engineering. / Title from title screen. Includes bibliographical references.

Thesis (M.S.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Department of Electrical Engineering, 2008. / Includes bibliographical references.

Thesis (Ph. D.)--Auburn University, 2008. / Abstract. Includes bibliographical references (p. 119-122).

Thesis (doctoral)--Humboldt Universität, Berlin, 2003. / Description based on print version record. Includes bibliographical references (p. [107]-113) and index. Also issued online.

Thesis (M.S.)--Brigham Young University. Dept. of Computer Science, 2005. / Includes bibliographical references (p. 59-62).

Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2006. / Schwan, Karsten, Committee Member ; Schimmel, David, Committee Member ; Copeland, John, Committee Member ; Owen, Henry, Committee Chair ; Wills, Linda, Committee Member.

When in physical proximity, data can be directly exchanged between the mobile devices people carry - for example over Bluetooth. If people cooperate to store, carry and forward messages on one another's behalf, then an opportunistic network may be formed, independent of any fixed infrastructure. To enable performant routing within opportunistic networks, use of social network information has been proposed for social network routing protocols. But the decentralised and cooperative nature of the networks can however expose users of such protocols to privacy and security threats, which may in turn discourage participation in the network. In this thesis, we examine how to mitigate privacy and security threats in opportunistic networks while maintaining network performance. We first demonstrate that privacy-aware routing protocols are required in order to maintain network performance while respecting users' privacy preferences. We then demonstrate novel social network routing protocols that mitigate specific threats to privacy and security while maintaining network performance.

M.Sc. (Information Technology) / The purpose of the research presented in this dissertation is to explore the uses of an adaptive multi-agent system for critical information infrastructure protection (CIIP). As the name suggests, CIIP is the process of protecting the information system which are connected to the infrastructure essential to the continued running of a country or organisation. CIIP is challenging due largely to the diversity of these infrastructures. The dissertation examines a number of artificial intelligence techniques that can be applied to CIIP; these techniques range from multi-agent systems to swarm optimisation. The task of protection is broken into three distinct areas: preventing unauthorised communication from outside the system; identifying anomalous actions on computers within the system; and ensuring that communication within the system is not modified externally. A multi-agent learning model, MALAMANTEAU, is proposed as a way to address the problem of CIIP. Due to various problems facing CIIP, multi-agent systems present good opportunities for solving these many problems in a single model. Agents within the MALAMANTEAU model will use diverse artificial and computational intelligence techniques in order to provide an adaptable approach to protecting critical networks. The research presented in the dissertation shows how computational intelligence can be employed alongside multi-agent systems in order to provide powerful protection for critical networks without exposing further security risks.

Along with the computers networks emerges the possibility of managing remotely the intelligent organizations although the safe change of information has become a problem to the institutions which transport structured data through nets of computers. One of the largest challenges is the search for safe and economically viable solutions. Protocols of safety, cryptographic algorithms, safe means of communication are essential items so that the information can travel in environmentals free of external interferences. One of the alternatives is the Virtual Private Networks. In this work, the main prominences of this technology will be presented using the protocol IPSec with the purpose of presenting a more atractive tool to the organizations due to its safety and economical viability. / Com as redes de computadores, surge também a possibilidade de administrar remotamente as organizações inteligentes, no entanto a troca de informações segura tornou-se um problema para as instituições que trafegam dados estruturados através das redes de computadores. Um dos maiores desafios é a busca de soluções economicamente viáveis e ao mesmo tempo seguras. Protocolos de segurança, algoritmos criptográficos meios de comunicação seguros, são itens essenciais para que a informação possa trafegar em ambientes livres de interferências externas. Uma das soluções é a Rede Virtual Privada. Neste trabalho, serão apresentados os principais destaques desta tecnologia, utilizando o protocolo IPSec, com o propósito de apresentar mais uma solução atrativa para as organizações, pois trata-se de uma solução economicamente viável e segura.

No description available.