Final answer:
In cybersecurity, AAA stands for Authentication, Authorization, and Accounting, representing key principles in securing systems and networks by verifying user identities, managing access rights, and recording user activities.
Step-by-step explanation:
In cybersecurity, AAA stands for Authentication, Authorization, and Accounting. These three principles are fundamental to securing systems and networks. Authentication ensures that users are who they claim to be, typically through passwords, biometrics, or multi-factor authentication methods.
Authorization grants or denies access rights to resources based on a user's identity. Accounting, also known as auditing, keeps track of user activities and resource usage, which is crucial for non-repudiation and for identifying any unauthorized or anomalous activities.