CompTIA Security+ SY0-801 lessons
All 27 free Security+ lessons with notes, vocabulary, and 116 exam-style practice questions with answers, organized by domains. Want to track progress? Use the interactive course.
Domain 1: General Security Concepts
The vocabulary of security: the CIA triad, zero trust, control types, change management, and cryptography.
Domain 2: Threats, Vulnerabilities, and Attacks
What threats are, who attacks, how they get in, the weaknesses they use, the signs they leave, and the new threats that come with AI.
Domain 3: Security Architecture
Designing secure systems: architecture models, secure infrastructure, data protection, and resilience.
Domain 4: Security Operations
The day-to-day work: hardening and mitigation, assets, vulnerabilities, monitoring, identity, automation, incident response, and investigations.
Domain 5: Security Program Management and Oversight
Running security as a program: governance, risk, vendors, compliance, audits, and security awareness.