Final answer:
Least Privilege is the security principle that mandates that only a minimum number of operating system processes should run in supervisory mode.
Step-by-step explanation:
The security principle that mandates that only a minimum number of operating system processes should run in supervisory mode is Least Privilege.
The principle of Least Privilege ensures that each process or user is granted the minimum level of privileges necessary to perform their tasks, reducing the potential for unauthorized actions or damage caused by malicious software. By limiting the number of processes running in supervisory mode, the attack surface is reduced, making it harder for attackers to exploit system vulnerabilities.
For example, if a user does not require administrative privileges to perform normal tasks, granting them such privileges would pose unnecessary security risks. By adhering to the principle of Least Privilege, organizations can minimize potential harm and protect their systems and data.