Security architecture models involve the design and development of secure systems and architectures. This subtopic covers the selection and application of security models, architectures and security controls, the design and implementation of security solutions, and the evaluation of the security posture of an organization's systems and infrastructure.
5 minutes
5 Questions
Security Architecture Models in CISSP provide structured frameworks for implementing security mechanisms in an information system. The Bell-LaPadula Model focuses on confidentiality by preventing unauthorized access through "no read up, no write down" principles - subjects cannot read objects at higher security levels or write to lower ones. The Biba Integrity Model protects data integrity with its "no read down, no write up" approach, preventing contamination from lower integrity levels. The Clark-Wilson Model emphasizes transaction integrity using well-formed transactions and separation of duties. The Brewer-Nash (Chinese Wall) Model prevents conflicts of interest by restricting access after initial choices. The Graham-Denning Model defines eight protection rules for subject-object operations. The Harrison-Ruzzo-Ullman Model addresses rights amplification risks. The Take-Grant Model uses directed graphs to analyze permission transfers. The Goguen-Meseguer Model focuses on noninterference to ensure high-level actions don't affect lower-level users. The Sutherland Model emphasizes integrity through assurances that information only flows according to permitted channels. Common Criteria provides standardized security evaluation frameworks with Evaluation Assurance Levels (EALs). TCSEC (Orange Book) classifies systems into security divisions (A-D). Information flow models track data movement through systems to ensure proper handling. Reference monitors enforce access control decisions, forming the basis of the security kernel in trusted systems. Understanding these models helps security professionals implement appropriate controls based on system security requirements.Security Architecture Models in CISSP provide structured frameworks for implementing security mechanisms in an information system. The Bell-LaPadula Model focuses on confidentiality by preventing unauthorized access through "no read up, no write down" principles - subjects cannot read objects at hi…