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.

Infosec
Skills you'll gain: Secure Coding, Distributed Denial-Of-Service (DDoS) Attacks, Application Security, Authorization (Computing), Authentications, Data Validation, Encryption, Security Software, Security Controls, Data Security, Vulnerability Scanning, Endpoint Security, Role-Based Access Control (RBAC), Intrusion Detection and Prevention, Database Application, Security Awareness, Cybersecurity, Configuration Management, Web Applications, Web Development Tools
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Agentic Workflows, AI Personalization, Agentic systems, Sales Training, Competitive Intelligence, Sales Management, Generative AI Agents, Sales Strategy, Sales, Personalized Campaigns, Customer Analysis, Customer Relationship Management (CRM) Software, Sales Process, Customer Relationship Management, Real Time Data, Proposal Writing, Automation, Customer Insights, Proposal Development
Intermediate · Course · 1 - 4 Weeks

Nanyang Technological University, Singapore
Skills you'll gain: Systems Engineering, Time Series Analysis and Forecasting, Social Studies, Quantitative Research, Sustainable Development, Critical Thinking and Problem Solving, Simulation and Simulation Software, Agentic systems, Systems Analysis, Computational Thinking, Mathematics and Mathematical Modeling, Graph Theory, Epidemiology, Jupyter
Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Internet Of Things, Telecommunications, Communication Systems, Distributed Computing, Wireless Networks, Digital Communications, General Networking, Local Area Networks, Network Model, Network Routing, Routing Protocols, Embedded Software, Network Protocols, Global Positioning Systems
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Digital Forensics, Microsoft Windows, User Accounts, USB, Identity and Access Management, File Systems, System Configuration, Software Installation, File Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Real-Time Operating Systems, Embedded Software, Software Architecture, Code Reusability, Embedded Systems, Memory Management, Systems Architecture, Software Design, Software Design Patterns, Performance Tuning, Secure Coding, Scalability, Data Sharing, OS Process Management
Intermediate · Course · 1 - 4 Weeks

École normale supérieure
Skills you'll gain: Theoretical Computer Science, Combinatorics, Algorithms, Graph Theory, Operations Research, Linear Algebra, Applied Mathematics, Mathematical Modeling, Solution Design, Probability
Mixed · Course · 1 - 3 Months

Packt
Skills you'll gain: Incident Response, Threat Modeling, Vulnerability Scanning, Vulnerability Management, Vulnerability Assessments, Threat Detection, Risk Management, Cybersecurity, Computer Security Incident Management, Secure Coding, Cyber Security Assessment, Incident Management, Security Testing, MITRE ATT&CK Framework, Systems Development Life Cycle, Cyber Governance, Intrusion Detection and Prevention, Cyber Threat Intelligence, Cyber Attacks, Network Infrastructure
Intermediate · Specialization · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Exploratory Data Analysis, Data Storytelling, Data Presentation, Data Analysis, Dashboard Creation, Interactive Data Visualization, No-Code Development, Market Data, Data Science, Predictive Modeling, Data Ethics, Data Capture, Data Processing, Data Transformation, Data Integrity, Data Cleansing, Applied Machine Learning, Data Governance, Data Collection, Data Integration
Intermediate · Course · 1 - 4 Weeks

Interactive Brokers
Skills you'll gain: Risk Analysis, Financial Trading, Securities Trading, Investments, Financial Market, Tax, Financial Regulations, Capital Markets, Investment Management, Financial Analysis, Risk Mitigation, Financial Industry Regulatory Authorities, Market Liquidity, Credit Risk, Income Tax, Market Dynamics, Tax Laws, Due Diligence
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Computer Hardware, Operating Systems, Desktop Support, Hardware Architecture, Network Troubleshooting, Databases, Technical Support and Services, Hardware Troubleshooting, Information Technology, Package and Software Management, Technical Support, Information Technology Operations, System Support, Database Management Systems, Computer Systems, Operating System Administration, System Configuration, Security Controls, Information Systems Security, Patch Management
Beginner · Course · 3 - 6 Months

EDUCBA
Skills you'll gain: Process Driven Development, Software Quality Assurance, Process Management, Software Development, Embedded Software, Verification And Validation, Software Engineering, Software Development Life Cycle, Software Development Methodologies, Quality Assurance, Systems Engineering, Configuration Management, Requirements Analysis, Change Requests, Process Modeling, Quality Control
Beginner · Course · 1 - 4 Weeks