An introduction to information assurance and security. Information confidentiality, availability, protection, and integrity. Security systems lifecycle. Risks, attacks, and the need for security. Legal, ethical, and professional issues in information security. Risk management including identification and assessment. Security technologies and tools. Security laws, audit and control. Cryptography foundations, algorithms and applications. Physical security, security and personnel, security implementation and management. Securing critical infrastructure. Trust and security in collaborative environments.