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Computer networks are compromised by various unpredictable factors, such as hackers, viruses, spam, faults, and system failures, hindering the full utilization of computer systems for collaborative computing one of the objectives for the next generation of the Internet. It includes the functions of data communication, resource sharing, group cooperation, and task allocation. One popular example of collaborative computing is grid computing. This monograph considers the latest efforts to develop a trusted environment with the high security and reliability needed for collaborative computing. The important modules treated include secure group communication, access control, dependability, grid computing, key management, intrusion detection, and trace back. In addition, a real project for developing a nationwide medical information system with high dependability and security is described. Contents: - Secure Group Communication (SGC);
- Cryptography Based Access Control;
- Intrusion Detection and Defence;
- Security in Grid Computing;
- Trusted and Seamless Medical Information Systems.
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