The Defence in Depth course is a package of multiple courses that covers all the Basic Fundamentals of CyberSecurity. All the courses present are mentioned below for your refrence.
1: Basics of CyberSecurity: Venkata Satish Guttala
2: Network Security: Smith Gonsalves
3: Web application Security: Om Prakash Joshi
4: Layered Security Approach: Ajay Bhayani
5: Incident Management: Lalit Vazirani
6: Mitre Att&Ck: Sartaj Ahmed Shaikh
7: Session on Cyber Security Policy Formulation: Nishant Singh