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.

The Hong Kong University of Science and Technology
Skills you'll gain: White-Box Testing, Acceptance Testing, Software Development Methodologies, Configuration Management, Debugging, Systems Development Life Cycle, Software Development Life Cycle, Software Testing, Software Development, Software Engineering, Unified Modeling Language, Software Quality Assurance, Software Configuration Management, User Acceptance Testing (UAT), System Design and Implementation, Change Control, Test Case, Requirements Analysis, Waterfall Methodology, Project Management
★ 4.7 (148) · Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Threat Detection, Cyber Security Strategy, System Monitoring, Cybersecurity, Cyber Operations, Continuous Monitoring, Network Security, Network Monitoring, Python Programming, Scripting, Scripting Languages
★ 4.5 (86) · Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Zero Trust Network Access, Cybersecurity, Cyber Security Strategy, Cyber Security Assessment, IT Security Architecture, Computer Security, Security Architecture Review, Network Security, Security Strategy, Enterprise Architecture, Cloud Security
Intermediate · Course · 1 - 4 Weeks

University of Alberta
Skills you'll gain: Reinforcement Learning, Systems Development, Solution Architecture, Machine Learning Methods, Model Training, Model Evaluation, Agentic systems, Artificial Neural Networks, Machine Learning, Model Optimization, Machine Learning Algorithms, Markov Model, Feature Engineering, Algorithms, Performance Tuning
★ 4.7 (653) · Intermediate · Course · 1 - 3 Months

Universitat Autònoma de Barcelona
Skills you'll gain: Computer Security Awareness Training, Operating Systems, Computer Literacy, digital literacy, File Management, Data Security, Information Technology, Computer Hardware, Safety and Security, Computer Systems
★ 4.7 (753) · Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Systems Thinking, Epidemiology, Systems Analysis, Social Network Analysis, Simulations, Network Analysis, Public Health, Network Model, Public Health and Disease Prevention, Social Determinants Of Health, Behavioral Health, Economics
★ 4.6 (205) · Beginner · Course · 1 - 4 Weeks

Imperial College London
Skills you'll gain: Biostatistics, Statistical Analysis, R (Software), R Programming, Statistical Methods, Data Wrangling, Regression Analysis, Exploratory Data Analysis, Statistical Software, Data Analysis, Logistic Regression, Probability & Statistics, Statistical Modeling, Descriptive Statistics, Model Evaluation, Public Health
★ 4.5 (331) · Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Cyber Security Assessment, Security Testing, Cybersecurity, Vulnerability Scanning, Cyber Operations, Cyber Threat Intelligence, Cyber Threat Hunting, Scenario Testing, Cyber Security Strategy, Exploitation techniques, Cyber Attacks, Problem Solving, Simulations
★ 4.7 (66) · Intermediate · 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 (128) · Mixed · Course · 1 - 4 Weeks

Queen Mary University of London
Skills you'll gain: General Data Protection Regulation (GDPR), Law, Regulation, and Compliance, Cloud Security, Personally Identifiable Information, Data Security, Regulation and Legal Compliance, Information Privacy, Cyber Governance, Cybersecurity, Cyber Security Policies, Cloud Services, Cloud Computing, Data Governance, Regulatory Requirements, Data Sharing, Legal Risk, Computer Security Incident Management, Data Import/Export, Incident Management, Case Law
★ 4.9 (79) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: R (Software), Data Import/Export, Package and Software Management, R Programming, Data Structures, Software Installation, Data Analysis Software, Data Analysis, Data Science
★ 4.3 (387) · Beginner · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Cybersecurity, Cyber Attacks, Threat Management, Security Controls, Cyber Security Strategy, Threat Detection, Cyber Threat Intelligence, Cyber Security Policies, Security Awareness, Computer Security Awareness Training, Cyber Risk, Data Security, Security Management, Enterprise Security, Information Assurance, Data Integrity
★ 4.8 (63) · Beginner · Course · 1 - 4 Weeks