Pen testing courses can help you learn vulnerability assessment, network security, and ethical hacking techniques. You can build skills in penetration testing methodologies, risk analysis, and incident response strategies. Many courses introduce tools like Metasploit, Wireshark, and Burp Suite, that support identifying and exploiting security weaknesses in systems and applications. By engaging with these tools, you can practice practical work that enhance your ability to secure networks and protect sensitive data.

Skills you'll gain: Application Servers, Data Migration, Enterprise Application Management, Java Platform Enterprise Edition (J2EE), Servers, Java, Application Deployment, Software Installation, Configuration Management, Identity and Access Management, Command-Line Interface, System Configuration, Authentications
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Spring Framework, Microservices, JUnit, Model View Controller, Restful API, Spring Boot, Software Architecture, API Gateway, Web Services, Object-Relational Mapping, Transaction Processing, Data Persistence, Service Oriented Architecture, Cloud Computing Architecture, JSON, YAML, Load Balancing, Unit Testing, Java Programming, Enterprise Application Management
Beginner · Specialization · 1 - 3 Months
Coursera
Skills you'll gain: Experimentation, Business Metrics, Data Storytelling, Return On Investment, Model Evaluation, Dashboard, Performance Measurement, Business Valuation, Key Performance Indicators (KPIs), A/B Testing, Performance Analysis, Analysis, Product Management, Machine Learning, Financial Analysis, Business, Stakeholder Communications, Sample Size Determination, Power Electronics
Intermediate · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Risk Management, Mathematical Modeling, Predictive Modeling, Financial Modeling, Simulation and Simulation Software, Operations Research, Probability Distribution, Data-Driven Decision-Making, Statistical Hypothesis Testing, Statistical Analysis, Microsoft Excel, Excel Formulas
Mixed · Course · 1 - 4 Weeks
Skills you'll gain: Hardware Design, Electronics Engineering, Design Reviews, Computer-Aided Design, Electronic Components, Technical Design
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: API Design, Cloud API, Amazon CloudWatch, AI Security, Cloud Management, Security Controls, Application Performance Management, Redis, Load Balancing, Performance Testing, Network Monitoring, Incident Response, MLOps (Machine Learning Operations), GitHub, Python Programming, Machine Learning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Statistical Visualization, Model Evaluation, Data Presentation, Statistical Hypothesis Testing, Statistical Analysis, Data Storytelling, Large Language Modeling, Statistical Methods, Data-Driven Decision-Making, Matplotlib, Statistical Inference, Jupyter, Probability & Statistics, Experimentation, Performance Metric
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Core Data (Software), Model View Controller, Apple iOS, JSON, Swift Programming, Apple Xcode, iOS Development, Responsive Web Design, Data Persistence, Data Structures, Object Oriented Programming (OOP), Unit Testing, Transaction Processing, Database Application, User Interface (UI), Application Development, UI Components, Application Programming Interface (API), Data Access, Mobile Development
Beginner · Specialization · 3 - 6 Months

University of London
Skills you'll gain: Virtual Reality, Video Game Development, Augmented and Virtual Reality (AR/VR), Game Design, Prototyping, Virtual Environment, Storyboarding, Ideation, Usability Testing, 3D Assets, Interaction Design, User Experience Design, Data Ethics, Development Testing, Human Computer Interaction
Intermediate · Course · 1 - 3 Months

Duke University
Skills you'll gain: Programming Principles, Algorithms, C (Programming Language), Computer Programming, Software Engineering, Problem Solving, Solution Design
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Rust (Programming Language), Containerization, Data Pipelines, CI/CD, Docker (Software), Jenkins, Application Deployment, DevOps, LLM Application, Hugging Face, Unit Testing, Large Language Modeling, Restful API, Serverless Computing, Generative AI, Amazon Web Services, Command-Line Interface, Natural Language Processing, Computer Programming, Cloud Computing
Beginner · Specialization · 3 - 6 Months

Whizlabs
Skills you'll gain: Selenium (Software), Debugging, Software Testing, Unit Testing, Test Automation, UI Components, Browser Compatibility, Web Applications, Test Script Development, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Test Case, Development Environment, Python Programming
Beginner · Course · 1 - 4 Weeks