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.

Imperial College London
Skills you'll gain: Epidemiology, Mathematical Modeling, Infection Control, Statistical Modeling, Simulations, Infectious Diseases, Public Health and Disease Prevention, R Programming, Public Health, Predictive Modeling, Model Evaluation, R (Software), Model Optimization, Differential Equations, Data Modeling, Immunology, Regression Analysis, Statistical Methods, Probability Distribution
Intermediate · Specialization · 1 - 3 Months
University of Washington
Skills you'll gain: Unsupervised Learning, Supervised Learning, Data Science, Machine Learning Methods, Predictive Analytics, Applied Machine Learning, Analytics, Data Analysis, R Programming, Model Optimization, Statistical Methods, Decision Tree Learning, Statistical Inference, Statistical Analysis, Machine Learning, Statistics, Graph Theory, Classification Algorithms, Network Analysis, Big Data
Mixed · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Cloud Hosting, Cloud Computing, Cloud Services, Cloud Deployment, Cloud Platforms, Cloud Technologies, Public Cloud, Cloud Computing Architecture, Cloud Infrastructure, Managed Services, Computing Platforms, Infrastructure As A Service (IaaS), Serverless Computing, Service Level, Microsoft Azure, Software As A Service, Hybrid Cloud Computing, Platform As A Service (PaaS), Distributed Computing, Servers
Beginner · Course · 1 - 3 Months

Skills you'll gain: Test Script Development, Selenium (Software), Code Reusability
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Operations Research, Algorithms, Graph Theory, Network Model, Combinatorics, Mathematical Software, Mathematical Modeling, Theoretical Computer Science, Model Optimization, Python Programming
Build toward a degree
Advanced · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Object-Relational Mapping, Java Platform Enterprise Edition (J2EE), Database Design, Data Access, Data Persistence, Java, Relational Databases, Data Mapping, Java Programming, JUnit, SQL, Query Languages, Software Versioning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Google Analytics, Dashboard Creation, Data Storytelling, Content Performance Analysis, Data Validation, Stakeholder Engagement, Statistical Modeling, Search Engine Optimization, Marketing Analytics, Web Analytics, Marketing Automation, Data Visualization, Customer Insights, Data-Driven Decision-Making, Campaign Management, Key Performance Indicators (KPIs), Predictive Analytics, Performance Measurement, Return On Investment, Artificial Intelligence
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Penetration Testing, Vulnerability Scanning, Hardening, Cybersecurity, Security Testing, Vulnerability Assessments, Network Analysis, Exploitation techniques, Linux, System Configuration, Linux Administration, Virtual Machines, Linux Commands, Operating Systems, Software Installation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Root Cause Analysis, Data Ethics, Responsible AI, Law, Regulation, and Compliance, Retrieval-Augmented Generation, LLM Application, Operations Research, Regulatory Compliance, Strategic Decision-Making, Apache Kafka, Pareto Chart, Operational Analysis, Decision Intelligence, Stakeholder Communications, Revenue Management, Large Language Modeling, Real Time Data, Statistical Inference, General Data Protection Regulation (GDPR), Reinforcement Learning
Intermediate · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Agentic Workflows, Technical Communication, AI Enablement, Model Deployment, AI Workflows, Generative AI Agents, Reinforcement Learning, Artificial Intelligence and Machine Learning (AI/ML), Decision Intelligence, AI Orchestration, Agentic systems, Artificial Intelligence, Cloud Computing, Deep Learning, Data Visualization, Python Programming, Machine Learning, Data Engineering, Anomaly Detection, Statistical Analysis
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Vector Databases, Hugging Face, MongoDB, Embeddings, NoSQL, AI Personalization, Artificial Intelligence, PostgreSQL, Relational Databases, Database Management Systems, Database Theory, Generative AI, Operational Databases, SQL, Databases, Database Systems, LLM Application, Query Languages, Machine Learning, Data Science
Intermediate · Specialization · 1 - 3 Months

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
Mixed · Course · 1 - 4 Weeks