Leonard LaPadula

The Bell-LaPadula model, often associated with Leonard LaPadula’s work, is a security framework designed to protect sensitive information in computer systems. It enforces rules that control how data is accessed and shared based on security levels. For example, someone with a "confidential" clearance can read data at that level but cannot access "top secret" information. The model emphasizes maintaining confidentiality by preventing unauthorized data access or transfer. It’s widely used in government and defense organizations to ensure that sensitive data remains secure and only accessible to authorized personnel.