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Security Operations: Building Fast, Disciplined Defense Systems

7 chapters · 31 lessons

1. 1. The Security Operations Loop

   5 lessons

   Understand how security operations turns signals into action through intake, triage, investigation, containment, recovery, and learning.

2. 2. Triage Frameworks and Alert Prioritization

   4 lessons

   Build disciplined triage systems that route alerts by severity, business context, and attacker intent.

3. 3. Detection Engineering: Writing Rules That Scale

   5 lessons

   Design detection logic that catches real attacks, minimizes false positives, and adapts as adversaries change tactics.

4. 4. Response Playbooks and Automation Guardrails

   4 lessons

   Build playbooks that automate low-risk actions and preserve human judgment for decisions that require context and accountability.

5. 5. Measuring Time Advantage: Dwell Time and Response Speed

   4 lessons

   Track metrics that reveal whether your operations can act faster than attackers can achieve their objectives.

6. 6. Adversarial Testing: Red Teams and Purple Team Exercises

   4 lessons

   Simulate realistic attack scenarios to test whether your detection, triage, and response processes can keep up under pressure.

7. 7. AI Assisted Operations and New Failure Modes

   5 lessons

   Understand how AI tools can accelerate triage and investigation, and what guardrails prevent hallucination, prompt injection, and data leakage.