This course explores the critical aspects of cybersecurity within telecommunication networks. Topics include an introduction to telecom networks and security fundamentals, network security threats, and vulnerabilities. Students will learn about security protocols, firewalls, IDS/IPS, and network security devices. The course covers mobile network security challenges, securing wireless communications, and addressing security concerns in 5G and next-generation networks. Additional focus areas include incident response, network forensics, cloud security, and compliance. By the end of the course, learners will have the expertise to manage and secure telecom networks against evolving cyber threats.