If a user can determine whether a high-level process is running (e.g., by noticing timing differences or cache behavior), interference exists. Noninterference is the theoretical foundation behind and side-channel resistance in secure processors like Intel’s SGX.
The addresses the problem of conflict of interest , commonly found in consulting firms, law practices, and investment banks. Unlike BLP or Biba (which use static labels), the Chinese Wall model is dynamic —a user’s access changes based on their history. information security models
BLP focuses solely on confidentiality. It does not address integrity—meaning a low-level user could corrupt a high-level file (e.g., by writing junk data into it, which is allowed since it’s writing up). If a user can determine whether a high-level
Zero Trust operates on a simple principle: Even if a user is inside the corporate network, they must be continuously authenticated. This model is essential for protecting against insider threats and modern data breaches. Attribute-Based Access Control (ABAC) Unlike BLP or Biba (which use static labels),
