Access control

Access control is a foundational cybersecurity mechanism that regulates who or what can view, use, or interact with resources within an information system. Its primary objective is to enforce an organization's security policies by ensuring that only authorized entities—whether users, applications, or devices—are granted appropriate levels of access to sensitive data, network services, and other digital assets. This rigorous management of permissions is essential for robust risk management, effectively mitigating unauthorized access, data breaches, and system misuse by minimizing the attack surface.

The process typically involves three key steps: identification (verifying who a user claims to be), authentication (confirming their identity through credentials), and authorization (determining what specific actions or resources the authenticated user is permitted to access based on predefined security models such as role-based or attribute-based access control). Implementing robust access control is paramount for safeguarding the confidentiality, integrity, and availability of information, while also supporting threat intelligence efforts by limiting the blast radius of potential compromises and ensuring compliance with regulatory requirements.