Explore fundamental security concepts in this comprehensive 39-minute video from the CCNA 200-301 course. Learn about the CIA Triad, various types of attacks including Denial-of-Service, spoofing, and man-in-the-middle, as well as malware and social engineering threats. Discover the importance of multi-factor authentication, digital certificates, and AAA in network security. Gain insights into essential security program elements and test your knowledge with multiple quizzes throughout the lesson.