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.

École Polytechnique
Skills you'll gain: Energy and Utilities, Climate Change Mitigation, Electrical Power, Climate Change Programs, Hydrology, Electric Power Systems, Time Series Analysis and Forecasting, Water Resource Management, Predictive Modeling, Environment, Estimation, Hydraulics, Mathematical Modeling, Systems Of Measurement, Physical Science
★ 4.6 (152) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Agile Methodology, User Feedback, Collaborative Software, Application Development, Software Quality (SQA/SQC), Application Design, Software Development, Prototyping, Constructive Feedback, Development Testing, User Interface (UI), Business Logic
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Ggplot2, Plot (Graphics), Data Visualization Software, Data Visualization, Visualization (Computer Graphics), Interactive Data Visualization, Scatter Plots, Statistical Visualization, Histogram, Graphic and Visual Design, R Programming, Graphical Tools, R (Software), Data Mapping, Geospatial Information and Technology, Geospatial Mapping, Geographic Information Systems
★ 3.9 (158) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Bash (Scripting Language), Scalability, Distributed Computing, Shell Script, Computer Systems, Big Data, Linux Commands, Hardware Architecture, Operating Systems, File Systems, Computing Platforms, Linux, Performance Testing, Scripting, Performance Tuning, Memory Management, Programming Principles, Capacity Management, File Management
★ 3.8 (167) · Beginner · Course · 1 - 4 Weeks

L&T EduTech
Skills you'll gain: Electrical Systems, Electric Power Systems, Electrical Power, Energy and Utilities, Electrical Equipment, Three-Phase, High Voltage, Wiring Diagram, Electrical Engineering, Systems Analysis, Failure Analysis, Engineering Analysis, Mathematical Modeling, Simulation and Simulation Software, Engineering Calculations, Simulations, Network Analysis
★ 4.4 (25) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: PyTorch (Machine Learning Library), Model Training, Convolutional Neural Networks, Transfer Learning, Image Analysis, Predictive Modeling, Deep Learning, Radiology, Medical Imaging, Computer Vision, Machine Learning, Data Preprocessing, Data Transformation
★ 4.5 (340) · Intermediate · Guided Project · Less Than 2 Hours

Università di Napoli Federico II
Skills you'll gain: Market Liquidity, Bank Regulations, Derivatives, Securities Trading, Financial Regulation, Financial Market, Securities (Finance), FinTech, Financial Systems, Banking, Financial Trading, Financial Services, Market Dynamics, Financial Regulations, Financial Statement Analysis, Commercial Banking, Investments, Futures Exchange, Risk Modeling, Finance
★ 4.5 (11) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Ethics, Dashboard Creation, Dashboard, Power BI, Business Intelligence, Interactive Data Visualization, Data Presentation, Data Visualization, Data Visualization Software, Data-Driven Decision-Making, Business Reporting, Data Analysis Expressions (DAX), Data Security, Ethical Standards And Conduct, Report Writing, Data Analysis, Performance Analysis, Performance Tuning
★ 4.8 (44) · Beginner · Course · 1 - 3 Months

Infosec
Skills you'll gain: Medical Privacy, Information Privacy, Health Insurance Portability And Accountability Act (HIPAA) Compliance, Data Governance, Security Management, Computer Security Incident Management, Personally Identifiable Information, Continuous Monitoring, Law, Regulation, and Compliance, Data Security, Information Assurance, Document Management, Security Controls, Threat Management, Health Information Management, Security Strategy, General Data Protection Regulation (GDPR), Data Management, Cyber Governance, Incident Response
★ 4.7 (42) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Secure Coding, Application Security, Security Testing, Software Development Methodologies, Configuration Management, Software Development, Software Configuration Management, Systems Development Life Cycle, Software Development Life Cycle, Package and Software Management, Software Testing, Security Engineering, API Testing, Application Programming Interface (API), Cloud Security, Process Driven Development, Risk Management Framework
★ 4.8 (39) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Pay Per Click Advertising, Google Ads, Keyword Research, Advertising Campaigns, Search Engine Marketing, Marketing Budgets, Online Advertising, Campaign Planning, Data-Driven Marketing, Paid media, Digital Marketing Tools, Campaign Management, Advertising, Digital Advertising, Marketing Planning, Digital Marketing Campaigns, Data-Driven Decision-Making, Sales Presentation, Budgeting, Performance Metric
Beginner · Course · 1 - 4 Weeks

Fundação Instituto de Administração
Skills you'll gain: Big Data, Internet Of Things, Social Network Analysis, Text Mining, Apache Hadoop, Business Intelligence, Social Media Analytics, Unstructured Data, Analytics, Cloud Computing, Cloud Infrastructure, Data-Driven Marketing, Data Science, Fraud detection, Customer Retention, Marketing Strategies
★ 4.6 (323) · Beginner · Course · 1 - 4 Weeks