An ideal text for introductory information security courses, the second edition of Elementary Information Security provides a comprehensive yet easy-to-understand introduction to the complex world of cyber security and technology. Thoroughly updated with recently reported cyber security incidents, this essential text enables students to gain direct experience by analyzing security problems and practicing simulated security activities. Emphasizing learning through experience, Elementary Information Security, Second Edition addresses technologies and cryptographic topics progressing from individual computers to more complex Internet-based systems.