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.

Board Infinity
Skills you'll gain: Restful API, Secure Coding, Application Deployment, Web Development, Full-Stack Web Development, Cloud API, Software Documentation, Data Validation
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Overcoming Objections, Rapport Building, Sales, Sales Strategy, Negotiation, Contract Negotiation, Relationship Building, Price Negotiation, Sales Presentation, Communication, Communication Strategies, Intercultural Competence, Virtual Teams, Business Research, Active Listening, Market Research, Empathy & Emotional Intelligence, Marketing Psychology, Digital Communications, Goal Setting
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Accounts Payable, Accounts Payable and Receivable, Invoicing, Billing & Invoicing, Data Entry, Payment Processing and Collection, Transaction Processing, SAP Applications, Accounting Systems, Accounting and Finance Software, Accounting Records, General Ledger, Enterprise Resource Planning
Beginner · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Open Web Application Security Project (OWASP), Selenium (Software), Software Testing, Security Testing, Test Automation, Performance Testing, Functional Testing, Test Script Development, Test Tools, Test Execution Engine, Test Planning, Application Security, Mobile Development, Browser Compatibility
Intermediate · Course · 1 - 4 Weeks

New York University
Skills you'll gain: Supervised Learning, Dimensionality Reduction, Unsupervised Learning, Applied Machine Learning, Decision Tree Learning, Machine Learning, Financial Trading, Reinforcement Learning, Scikit Learn (Machine Learning Library), Financial Services, Regression Analysis, Correlation Analysis, Exploratory Data Analysis, Portfolio Management, Python Programming, Artificial Neural Networks
Intermediate · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Test Automation, Regression Testing, Software Testing, Software Development Tools, Unit Testing, White-Box Testing, Code Coverage, Security Testing, Verification And Validation, Test Case, Test Data, Debugging, Automation, Application Security
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Web Design and Development, Front-End Web Development, Web Development, Web Applications
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Cyber Risk, Risk Management Framework, Cybersecurity, Cyber Governance, Cyber Security Strategy, Risk Management, Infrastructure Security, Cyber Security Assessment, Security Controls, Vulnerability Assessments, Stakeholder Communications, Continuous Improvement Process, Asset Management
Mixed · Course · 1 - 3 Months

Logical Operations
Skills you'll gain: Network Troubleshooting, Network Administration, Network Security, Network Architecture, TCP/IP, Network Routers, Computer Networking, Network Routing, Virtual Local Area Network (VLAN), Dynamic Host Configuration Protocol (DHCP), Wireless Networks, Local Area Networks, Network Switches, Networking Hardware, Network Infrastructure, IT Automation, Network Protocols, Routing Protocols, Hardware Troubleshooting, Network Model
Beginner · Specialization · 1 - 3 Months

DeepLearning.AI
Skills you'll gain: Generative Adversarial Networks (GANs), Generative AI, PyTorch (Machine Learning Library), Image Analysis, Convolutional Neural Networks, Responsible AI, Data Ethics, Unsupervised Learning, Information Privacy, Data Synthesis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: User Story, Business Requirements, Requirements Analysis, Requirements Elicitation, Business Analysis, User Requirements Documents, Gap Analysis, Project Documentation, Functional Specification, Diagram Design, Process Analysis, Business Process Modeling, Needs Assessment
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Magnetic Resonance Imaging, Data Analysis, Analytical Skills, Image Analysis, Statistical Analysis, Advanced Analytics, Network Analysis, Psychology, Time Series Analysis and Forecasting, Matlab, Neurology, Statistical Modeling, Statistical Methods
Mixed · Course · 1 - 4 Weeks