The Microsoft Security Fundamentals (98-367) certification is designed to introduce candidates to essential cybersecurity and information security concepts. This guide explains core topics including security layers, operating system security, network security, authentication, authorization, and security software principles. It is ideal for beginners who want to build foundational knowledge in cybersecurity before progressing to advanced certifications. The exam focuses on understanding basic security threats, protection mechanisms, and best practices for securing systems and networks. Whether you are a student, IT beginner, or aspiring cybersecurity professional, this certification provides a strong starting point in the security domain. With structured preparation and practice-based learning resources available through CertsLibrary, candidates can improve conceptual clarity and strengthen their understanding of essential security principles required for the exam.