1. A computer-implemented method of attaching security policies to secured computing systems, the method comprising: attaching a security policy to a parent domain, wherein: the parent domain includes a first secured computing system; and the security policy is a natural language description for controlling access to the secured computing system; and upon determining that the parent domain propagates the security policy: identifying a first generation child domain, wherein: the first generation child domain includes a second secured computing system; and the first generation child domain is associated with the parent domain in a hierarchical relationship; determining that the first generation child domain inherits the security policy based on an inheritance rule; and attaching the security policy to the first generation child domain.