Network security courses can help you learn about firewalls, intrusion detection systems, and encryption protocols. You can build skills in risk assessment, incident response, and vulnerability management. Many courses introduce tools like Wireshark for network analysis, Nessus for vulnerability scanning, and various security information and event management (SIEM) systems, showing how these skills are applied in practical work to protect networks from cyber threats.
LearnQuest
Skills you'll gain: Blockchain, Key Management, Threat Modeling, Public Key Infrastructure, Security Controls, Cryptography, Cybersecurity, Data Security, Application Security, Network Security, Security Architecture Review, IT Security Architecture, Vulnerability Assessments, Encryption, Secure Coding, Cryptographic Protocols, Distributed Denial-Of-Service (DDoS) Attacks, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management
★ 4.6 (21) · Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: AI Security, Threat Modeling, Open Web Application Security Project (OWASP), Security Testing, Retrieval-Augmented Generation, Software Architecture, API Design, Test Automation, Vulnerability Management, Agentic systems, Systems Design, Model Evaluation, Test Driven Development (TDD), CI/CD, Python Programming, Continuous Deployment, Dependency Analysis, Large Language Modeling, Machine Learning, Performance Analysis
Intermediate · Specialization · 3 - 6 Months
Skills you'll gain: Computer Security Incident Management, Incident Management, Incident Response, Security Management, Threat Management, Security Strategy, Event Monitoring, Security Information and Event Management (SIEM), Enterprise Security, IT Automation, Automation, Systems Integration
★ 4.9 (10) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Threat Management, Cybersecurity, Cyber Risk, Computer Security Incident Management, Risk Management Framework, Risk Management, Incident Response, Vulnerability Management, Risk Mitigation, Security Information and Event Management (SIEM), Security Controls, Enterprise Security, Risk Analysis, Threat Detection, Open Web Application Security Project (OWASP), Asset Protection, System Monitoring, Auditing
★ 4.8 (11K) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Computing Architecture, Cloud Security, Cloud Deployment, Cloud Computing, Incident Response, Cloud Infrastructure, Cloud Solutions, Computer Security Incident Management, Incident Management, Cloud Standards, Capacity Management, Application Security, Security Controls, Network Security, Data Security, Hardening, Scalability, Emerging Technologies, Identity and Access Management
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Threat Modeling, IT Security Architecture, Network Security, Security Architecture Review, Internet Of Things, Identity and Access Management, Encryption, Cybersecurity, Security Controls, Threat Management, Cloud Security, Vulnerability Assessments, Cloud Solutions, Cryptographic Protocols, Systems Architecture, Cloud Services, Cloud Deployment, Cryptography, Information Privacy
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Application Security, Angular, OAuth, Test Driven Development (TDD), Cryptography, Web Components, Data Validation, Unit Testing, Vue.JS, Development Testing, Data Security, Authentications, Encryption, Authorization (Computing), HTML and CSS, Hypertext Markup Language (HTML), Web Applications, Javascript, Security Strategy, Computer Programming
★ 4.3 (102) · Beginner · Specialization · 1 - 3 Months

Infosec
Skills you'll gain: Application Security, Secure Coding, Package and Software Management, Node.JS, Vulnerability Management, Javascript, Dependency Analysis, Vulnerability Assessments, Exploitation techniques
★ 4.5 (14) · Intermediate · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Cloud Security, Amazon Web Services, Encryption, Data Security, Cryptography, Security Controls, Cryptographic Protocols
★ 4.8 (56) · Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Computer Security, OSI Models, IT Management, Systems Administration, Virtualization, Virtualization and Virtual Machines, Operating System Administration, Information Technology, Information Systems Security, Enterprise Security, General Networking, Cybersecurity, Computing Platforms, Network Infrastructure, Security Controls, Virtual Machines, Enterprise Architecture, Information Assurance, Data Integrity
★ 4.7 (642) · Beginner · Course · 1 - 3 Months

Macquarie University
Skills you'll gain: Information Privacy, Data Security, Incident Management, Artificial Intelligence, Cybersecurity, Cyber Risk, Security Strategy, Risk Mitigation
★ 4.5 (11) · Beginner · Course · 1 - 3 Months

John Wiley & Sons
Skills you'll gain: Security Management, Security Strategy, Disaster Recovery, Cyber Governance, Cybersecurity, Data Governance, Information Systems Security, Risk Management Framework, Risk Management, Security Requirements Analysis, Security Controls, Data Security, Cyber Security Policies, Cyber Risk, Law, Regulation, and Compliance, Data Management, Data Ethics, Record Keeping, Network Security, Information Privacy
Beginner · Course · 1 - 4 Weeks