CCT 272: Confidentiality, Integrity, Availability, Authenticity, and Nonrepudiation (CISSP Domain 1.2)

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The core principles of cybersecurity aren't just theoretical concepts—they're the practical foundation every security professional needs to master. In this deep-dive episode, Sean Gerber breaks down the critical components of Domain 1.2 of the CISSP exam, unpacking confidentiality, integrity, availability, authenticity, and non-repudiation in clear, actionable terms.
Starting with breaking news about Microsoft ending Windows 10 support on October 14th, Sean highlights the urgent security implications for organizations still running this widely-embedded operating system. He emphasizes the importance of comprehensive inventory management—especially for IoT devices that may contain embedded Windows components—and the available extension options for critical systems.
The heart of the episode delivers a comprehensive exploration of the CIA triad. Sean walks through each element with real-world examples: confidentiality through encryption and access controls; integrity via change management and validation processes; and availability through redundant systems and business continuity planning. But he doesn't stop there. The discussion expands to cover the DAD triad (Disclosure, Alteration, Destruction) which helps identify security failures, and the AAA framework (Authentication, Authorization, Accounting) that provides essential security controls.
What makes this episode particularly valuable is Sean's practical advice drawn from 25 years of cybersecurity experience. He emphasizes the importance of defense-in-depth strategies, network segmentation, and prioritizing critical systems rather than attempting to fix everything at once—"eating the elephant one toenail at a time." His methodical approach helps listeners understand not just the concepts themselves, but how to implement them effectively in real-world environments.
Whether you're preparing for the CISSP exam or looking to strengthen your organization's security posture, this episode provides the foundational knowledge and practical strategies you need. Visit CISSP Cyber Training for free study materials, practice questions, and mentoring options to accelerate your cybersecurity career.

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1. Podcast Introduction and Updates (00:00:00)

2. Windows 10 End-of-Life Discussion (00:03:46)

3. Domain 1.2 Overview (00:05:19)

4. Confidentiality Concepts (00:08:26)

5. Integrity Components (00:12:54)

6. Availability Principles (00:17:50)

7. Beyond CIA: Security Mechanisms (00:22:42)

8. DAD Triad and Security Failures (00:26:44)

9. Authentication, Authorization, Accounting (00:28:55)

10. Authenticity and Non-repudiation (00:34:34)

11. Defense in Depth Strategies (00:36:16)

12. Episode Wrap-up and Resources (00:41:02)