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.

Yonsei University
Skills you'll gain: Apache Spark, Big Data, SPSS (Software), SPSS, Analytics, Real Time Data, Apache Hadoop, Data Processing, Statistical Analysis, Data Analysis Software, Business Planning, Data Storage Technologies, Business Strategy, Business Strategies, Market Share, Distributed Computing, Machine Learning Algorithms, File Systems
★ 4.7 (321) · Beginner · Course · 1 - 3 Months

John Wiley & Sons
Skills you'll gain: Statistics, Probability & Statistics, Data Analysis, Statistical Methods, Data Literacy, Data Collection, Unsupervised Learning, Text Mining, Analytical Skills, Statistical Inference, Unstructured Data, Probability, Predictive Modeling, Data Science, Deep Learning, Machine Learning, Machine Learning Methods, Data Visualization, Business Communication, Communication
Intermediate · Course · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Graphing, Data Analysis, R (Software), R Programming, General Mathematics, Mathematical Modeling, Algebra, Mathematical Software, Applied Mathematics, Calculus, Business Mathematics
★ 4.7 (225) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Vulnerability Scanning, Penetration Testing, MITRE ATT&CK Framework, Metasploit, Vulnerability Assessments, Security Testing, Open Web Application Security Project (OWASP), Exploitation techniques, Test Tools, Virtual Machines, Technical Documentation, Microsoft Windows, Scripting
★ 5 (7) · Intermediate · Course · 3 - 6 Months

Skills you'll gain: Solution Design, Project Design, Project Scoping, Technical Documentation, System Implementation, Project Management, Technology Solutions, Project Implementation, Program Implementation, Project Closure, Project Coordination, Technical Consulting, Solution Delivery, Stakeholder Analysis, Requirements Analysis, Journey Mapping, Customer Engagement, Test Planning, Customer Analysis, Business Transformation
★ 4.6 (89) · Beginner · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Search Engine Marketing, Google Ads, Search Engine Optimization, Marketing Strategies, Pay Per Click Advertising, Data-Driven Marketing, Web Analytics and SEO, Online Advertising, Digital Marketing Tools, Marketing Effectiveness, Email Marketing, Marketing Analytics, Digital Marketing Campaigns, Digital Marketing, Marketing Planning, Marketing, Digital Advertising, Driving engagement, Strategic Marketing, Social Media Marketing
★ 4.5 (38) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Blogs, Content Performance Analysis, Google Analytics, Web Analytics, Promotional Strategies, Customer Engagement, Social Media Marketing, Social Media Analytics, Social Media, Customer Relationship Building, Content Marketing, Content Creation, Content Management Systems, Marketing
★ 4.6 (281) · Beginner · Guided Project · Less Than 2 Hours

O.P. Jindal Global University
Skills you'll gain: Computational Logic, Machine Learning Algorithms, Classification Algorithms, Natural Language Processing, Artificial Intelligence, Agentic systems, AI literacy, Machine Learning Methods, Machine Learning, Artificial Intelligence and Machine Learning (AI/ML), Decision Support Systems, Bayesian Network, Complex Problem Solving, Probability & Statistics, Algorithms
★ 4.6 (9) · Mixed · Course · 3 - 6 Months

KodeKloud
Skills you'll gain: Docker (Software), Containerization, Kubernetes, Cloud-Native Computing, Application Deployment, Linux Commands, Devops Tools, Unix Commands, DevOps, YAML, Command-Line Interface, Data Storage, Software Installation, File Systems, Computer Networking, Data Persistence
★ 4.6 (160) · Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Azure Active Directory, Microsoft Azure, Web Applications, Cloud Applications, Application Security, Cloud Security, Identity and Access Management, Authorization (Computing), Key Management, Application Development, Security Strategy, Application Programming Interface (API), Authentications, Encryption
★ 4.6 (14) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Business Transformation, Digital Transformation, Network Infrastructure, Virtual Networking, Network Architecture, Operational Efficiency, Cloud Infrastructure, Telecommunications, Cloud-Native Computing, Wireless Networks, Hybrid Cloud Computing, Technology Solutions, Cloud Deployment, Emerging Technologies, Network Security, Virtualization, Distributed Computing, Hardware Architecture, Scalability
★ 4.7 (9) · Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Cyber Security Policies, Cyber Security Assessment, Risk Management Framework, Security Management, Cyber Risk, Cybersecurity, Cyber Governance, Cyber Security Strategy, Command-Line Interface
★ 4.6 (124) · Mixed · Course · 1 - 4 Weeks