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.

University of Minnesota
Skills you'll gain: Open Web Application Security Project (OWASP), Cloud Security, Authentications, Key Management, Data Security, Cloud Applications, Cloud Development, Cloud Services, Application Security, Authorization (Computing), Cyber Risk, Secure Coding, Cloud Storage, Personally Identifiable Information, DevSecOps, General Data Protection Regulation (GDPR), Network Security, Information Privacy, Computer Security, Cryptography
★ 4.3 (172) · Beginner · Specialization · 3 - 6 Months

Infosec
Skills you'll gain: Digital Forensics, File Systems, Microsoft Windows, grep, Network Protocols, File Management, Operating Systems, Data Structures, General Networking, Data Validation, Record Keeping, Data Storage Technologies, Data Storage, Data Integrity, User Accounts, USB, Identity and Access Management, Ethical Standards And Conduct, Encryption, System Configuration
★ 4.7 (363) · Intermediate · Specialization · 3 - 6 Months

Google Cloud
Skills you'll gain: Cloud Management, Site Reliability Engineering, Service Level, Service Level Agreement, Google Cloud Platform, Operational Excellence, Public Cloud, Cloud Computing, Cloud Platforms, System Monitoring, Operational Efficiency, Operating Cost, DevOps, Scalability, Service Management, Distributed Computing, Cost Control, Cost Containment, Expense Management, Operating Expense
★ 4.8 (826) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Data Encryption Standard, Public Key Infrastructure, Cryptography, Brute-force attacks, Key Management, Advanced Encryption Standard (AES), Cryptographic Protocols, Encryption, Data Integrity, Cybersecurity, Computer Security, Information Assurance, Authentications, Data Security, Theoretical Computer Science, Threat Modeling, Communication Systems, Algorithms, Digital Communications
★ 4.6 (923) · Intermediate · Specialization · 3 - 6 Months

Vanderbilt University
Skills you'll gain: ChatGPT, Prompt Engineering, Agentic Workflows, Claude Code, Prompt Patterns, Generative AI Agents, AI Enablement, Prompt Engineering Tools, AI powered creativity, Multimodal Prompts, AI Product Strategy, Anthropic Claude, AI Orchestration, Agentic systems, Generative AI, AI Workflows, AI Personalization, AI Integrations, AI Security, Responsible AI
★ 4.8 (11K) · Beginner · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Shiny (R Package), Rmarkdown, Leaflet (Software), Plotly, Interactive Data Visualization, Data Presentation, Data Visualization Software, R (Software), R Programming, Statistical Reporting, Application Development, Software Documentation, Web Applications, Hypertext Markup Language (HTML), Package and Software Management
★ 4.6 (2.3K) · Mixed · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Salesforce, Salesforce Development, Data Quality, Data Modeling, Business Process Automation, Email Marketing, Data Security, Sales Enablement, Data Access, Data Management, Business Process, User Accounts, User Provisioning, Sales Process, Customer Relationship Management (CRM) Software, Customer Relationship Management, Dashboard, Sales Development, Automation, Cloud Computing
★ 4.2 (271) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Anomaly Detection, PyTorch (Machine Learning Library), Forecasting, Time Series Analysis and Forecasting, Recurrent Neural Networks (RNNs), Predictive Modeling, Deep Learning, Autoencoders, Predictive Analytics, Unsupervised Learning, Applied Machine Learning, Model Training, Generative Model Architectures, Convolutional Neural Networks, Exploratory Data Analysis, Model Optimization, Artificial Neural Networks, Data Preprocessing, Model Evaluation, Data Architecture
Intermediate · Course · 1 - 3 Months

Fortinet, Inc.
Skills you'll gain: Firewall, Network Security, Virtual Private Networks (VPN), Network Administration, IT Security Architecture, Intrusion Detection and Prevention, Network Infrastructure, Enterprise Security, Network Architecture, Infrastructure Security, Remote Access Systems, Security Controls, System Configuration, Security Software, Performance Tuning, Cybersecurity, API Gateway, Hardware Architecture, Malware Protection, Threat Detection
★ 4.4 (24) · Intermediate · Course · 1 - 3 Months

The University of Sydney
Skills you'll gain: Blockchain, Distributed Computing, Network Security, Scalability, Cryptography, Data Integrity, Transaction Processing, Algorithms
★ 4.5 (121) · Beginner · Course · 1 - 3 Months

DeepLearning.AI
Skills you'll gain: Model Optimization, Machine Learning Methods, Applied Mathematics, Calculus, Applied Machine Learning, Numerical Analysis, Machine Learning Algorithms, Software Visualization, Machine Learning, Python Programming, Advanced Mathematics, Artificial Neural Networks, Deep Learning, Computer Programming, Derivatives
★ 4.8 (968) · Intermediate · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Responsible AI, Data Ethics, Data Strategy, AI Enablement, AI Product Strategy, Data Governance, Business Strategies, Corporate Strategy, General Data Protection Regulation (GDPR), Personally Identifiable Information, Data Security, Governance, Business Transformation, Law, Regulation, and Compliance, Artificial Intelligence, Risking, Big Data, Machine Learning, Model Deployment, Innovation
★ 4.7 (464) · Beginner · Course · 1 - 4 Weeks