Which feature of an operating system allows it to handle security measures?

The ability of an operating system to handle security measures is largely associated with process isolation. This feature ensures that each process runs in its own memory space and cannot interfere with or access the memory of other processes. By isolating processes from one another, the operating system protects sensitive data from unauthorized access and reduces the risk of corrupting or disrupting other processes.

Process isolation establishes boundaries that can enforce security policies, ensuring that a compromised process cannot easily affect others. This is particularly important in multi-user environments and for running untrusted applications. If processes could interact freely, it would lead to increased vulnerability, as a malicious process could exploit permissions to access or manipulate data from other processes. Therefore, process isolation is fundamental to maintaining the integrity and confidentiality of the system's operations and the data it processes.