Information Security Models Pdf May 2026

Information security models are formal descriptions that translate high-level security goals (like protecting customer data) into specific technical rules that a computer system can enforce. These models provide a theoretical foundation for ensuring data remains private, accurate, and accessible. Core Conceptual Models

Bell-LaPadula (Confidentiality): Designed for military use to prevent secret information from leaking to lower clearance levels . Information Security Models Pdf

• "Information Security: Principles and Practices" by Mark Stanislav
• "Information Security Models" by Ravi Sandhu
• "A Survey of Information Security Models" by International Journal of Computer Science and Information Security
• "NIST Cybersecurity Framework (CSF) Model" by National Institute of Standards and Technology

4. The Brewer and Nash Model (Chinese Wall)

Focus: Conflict of interest prevention (Dynamic confidentiality). How it works: A consultant (subject) working for Company A cannot access information about a competitor (Company B) if those two companies are in the same "conflict of interest class." The model builds a wall dynamically after the first access. Information Security Models Pdf

Think of this as the "inverted" Bell-LaPadula. It focuses on the accuracy and trustworthiness of data rather than secrecy. Simple Integrity Axiom Information Security Models Pdf