Free Online Network Security Courses & MOOCs

Coursera

University of Colorado System

Design and Analyze Secure Networked Systems (Coursera)

Security & Networking

Discover the essential skills needed to secure networked systems in this expert-led online course. From understanding basic cyber threats to applying advanced risk management techniques, learn how to protect your data and computer systems from potential breaches. This course covers real-world case studies like the OPM data breach, providing practical insights into securing networks effectively.

Jun 22nd 2026

4 Weeks

Security Cybersecurity Security Systems

Coursera

University of Colorado System

Basic Cryptography and Programming with Crypto API (Coursera)

Security & Networking

Dive into the fascinating world of cryptography with our beginner-friendly online course, 'Basic Cryptography and Programming with Crypto API'. This course will equip you with essential knowledge in encryption methods, including mono-alphabetic substitution ciphers, one-time-pad, and quantum key distribution. You'll also explore efficient symmetric key algorithms like DES and AES, understand their applications, and learn how to protect against various attacks.

Jun 22nd 2026

4 Weeks

Programming Cryptography Network Security

Coursera

University of Colorado System

Hacking and Patching (Coursera)

Security & Networking

Discover the secrets of hacking and patching in our expert-led online course. Gain hands-on experience identifying and exploiting command injection vulnerabilities in web apps hosted on AWS Linux instances. Learn to search for valuable information within typical Linux systems and understand how to deposit and hide Trojans for future exploitation. You'll also learn essential skills in securing these applications through input validation using regular expressions, and discover a security design pattern that prevents the introduction of injection vulnerabilities.

Jun 22nd 2026

4 Weeks

Security Attacks Hacking

Coursera

University of Colorado System

Secure Networked System with Firewall and IDS (Coursera)

Security & Networking

Discover how to protect your networked systems with our expert-led course on Firewalls and IDS. From setting up dual-firewall DMZs to mastering the Linux firewall and employing Snort for intrusion detection, this course equips you with the knowledge to safeguard your network against threats.

Jun 22nd 2026

3 Weeks

Network Security Firewalls Fundamentals of Computer Network Security Specialization

Coursera

New York University

Real-Time Cyber Threat Detection and Mitigation (Coursera)

Security & Networking

Dive into the world of cybersecurity with our Real-Time Cyber Threat Detection and Mitigation course. This expert-led program will equip you with the knowledge and skills needed to protect enterprise assets from cyber threats in real-time. Explore TCP/IP protocol suites, understand basic security hacks, and learn how to configure firewall solutions effectively.

Jun 22nd 2026

4 Weeks

Security TCP/IP Cybersecurity

Coursera

University of Colorado System

DDoS Attacks and Defenses (Coursera)

Security & Networking

Discover how to protect your organization from Distributed Denial of Service (DDoS) attacks with this in-depth online course. From understanding the history and analyzing new threats like Mirai IoT Malware to implementing defense strategies, you'll gain a thorough knowledge of DDoS mitigation techniques. Explore A2D2, an innovative autonomous anti-DDoS network solution designed for small to medium-sized organizations.

Jun 22nd 2026

4 Weeks

Security Network Security Advanced System Security Design Specialization

Coursera

Alibaba Cloud Academy

Cloud Computing Fundamentals on Alibaba Cloud (Coursera)

CS: Information & Technology

Dive into the world of Alibaba Cloud with our beginner-friendly course. Gain a solid foundation in cloud computing fundamentals by exploring essential products like storage, networking, auto-scaling, and security solutions. This course is perfect for those new to cloud architecture and looking to build their skills on Alibaba's robust platform.

Jun 22nd 2026

5-12 Weeks

Security Cloud Computing Network Security

Coursera

Alibaba Cloud Academy

Protecting Cloud Architecture with Alibaba Cloud (Coursera)

CS: Software Engineering Computer Science

Embark on an in-depth journey into cloud security with our 'Protecting Cloud Architecture with Alibaba Cloud' course. This expert-led series covers essential topics such as Linux and Windows OS operations, network basics, host and application security, and data protection. Prepare to ace the ACA/ACP exams and secure your cloud infrastructure effectively.

Jun 22nd 2026

5-12 Weeks

Security Linux Data Security

Coursera

Google Cloud

Google Workspace Security (Coursera)

Security & Networking

Dive into the world of Google Workspace Security with our expert-led course designed for administrators and IT professionals. Master essential security practices including enforcing strong passwords, enabling two-step verification, managing application security, and integrating G Suite with third-party applications. This course is part of the Google Workspace Administration series and will equip you with the skills to safeguard your organization's data effectively.

Jun 22nd 2026

1 Week

Security Computer Science Network Security