Sicherheitsdomänen

Sicherheitsdomänen, often translated as security domains, represent a fundamental concept in computer security and access control. A security domain is a set of subjects (users or processes) and objects (resources like files, devices, or memory) that are subject to a common security policy. Within a security domain, access rights and permissions are managed according to predefined rules. The purpose of a security domain is to isolate different parts of a system or application, preventing unauthorized access or interference between them.

The principle of least privilege is often applied within security domains. This means that subjects are granted only the minimum level of access necessary to perform their intended functions. This containment helps to limit the damage that can be caused by a compromised subject. Different security domains can have varying levels of trust and privilege. For instance, a system might have a domain for trusted system administrators with extensive privileges and another domain for regular users with more restricted access.

Security domains are crucial for implementing robust access control mechanisms and ensuring the integrity and confidentiality of data. They are a key component in operating systems, networked environments, and application architectures. By segmenting the system into distinct security domains, organizations can more effectively manage security policies, audit access, and respond to security incidents. The concept helps to enforce separation of duties and prevent privilege escalation.