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: Spring Boot, Application Development, API Testing, Java Programming, Web Development, Program Development, Application Frameworks, Software Testing, Test Case, Secure Coding, Development Environment, Model View Controller, Software Development Tools, UI Components, Data Access, Authentications, SQL, Object Oriented Programming (OOP), Data Persistence, User Interface (UI)
★ 4.7 (18) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Webpack, Frontend Performance, Search Engine Optimization, Web Development Tools, Web Analytics and SEO, Performance Tuning, Build Tools, Debugging, Usability Testing, Web Development, Software Testing, Test Tools, Front-End Web Development, Functional Testing, Test Automation, Continuous Monitoring, Development Testing, Computer Programming Tools, JavaScript Frameworks, WordPress
★ 4.5 (38) · Intermediate · Course · 1 - 3 Months

King Abdullah University of Science and Technology
Skills you'll gain: Statistical Analysis, Bioinformatics, Unix, Scientific Visualization, Statistical Programming, R (Software), Unix Shell, R Programming, Rmarkdown, Unix Commands, Data Analysis, Data Quality, Statistical Hypothesis Testing, Exploratory Data Analysis, Data Visualization, Data Cleansing, Programming Principles, Pandas (Python Package), Python Programming, NumPy
★ 4.4 (93) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: R (Software), Object Oriented Programming (OOP), Object Oriented Design, R Programming, Debugging, Code Reusability, Functional Design, Programming Principles, Data Structures, Performance Tuning, Performance Testing
★ 4.2 (576) · Intermediate · Course · 1 - 3 Months

Amazon
Skills you'll gain: Git (Version Control System), Software Development Methodologies, Requirements Analysis, Version Control, Systems Development Life Cycle, Application Development, Software Development Life Cycle, Software Development, Agile Software Development, Unified Modeling Language, Software Testing, JUnit, Agile Methodology, Programming Principles, Java Programming, Spring Framework, Maintainability, Debugging, Java, Software Design Patterns
★ 4.8 (42) · Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Prompt Engineering, Prompt Patterns, Responsible AI, AI Integrations, OpenAI API, OpenAI, Generative AI, API Testing, Data Ethics, AI Security, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), Application Programming Interface (API), Fine-tuning, Computer Programming, Key Management
★ 4.5 (141) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: API Gateway, Serverless Computing, Cloud API, Restful API, Node.JS, Microsoft Azure, Application Programming Interface (API), API Design, API Testing, Software Testing, Network Routing
★ 4.5 (113) · Beginner · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Simulation and Simulation Software, Simulations, Mathematical Modeling, Electrical Engineering, Power Electronics, Electronic Components, Electric Power Systems, Matlab, Model Optimization, Electrical Systems, Engineering Calculations, Laboratory Testing, Mathematical Software, Laboratory Research, Basic Electrical Systems, Estimation
★ 4.7 (553) · Intermediate · Course · 1 - 3 Months

Duke University
Skills you'll gain: Bayesian Statistics, Statistical Hypothesis Testing, Statistical Modeling, Statistical Methods, Statistical Inference, Statistical Programming, Statistical Analysis, Probability & Statistics, Regression Analysis, Data Analysis, R Programming, Statistical Software, Probability, Data-Driven Decision-Making, Predictive Modeling, Model Evaluation, Probability Distribution
★ 3.8 (798) · Intermediate · Course · 1 - 3 Months

University of Alberta
Skills you'll gain: Computational Thinking, Video Game Development, Game Design, Software Quality (SQA/SQC), Problem Solving, Programming Principles, Computer Programming, Program Development, Algorithms, Python Programming, Computer Science, Debugging, Test Planning, Functional Testing, Other Programming Languages
★ 4.3 (236) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Linux Administration, Bash (Scripting Language), Network Monitoring, Cyber Security Assessment, System Configuration, Digital Forensics
★ 4.8 (58) · Intermediate · Course · 1 - 3 Months

Arizona State University
Skills you'll gain: Statistical Process Controls, Process Control, Semiconductors, Quality Assurance, Process Validation, Production Process, Verification And Validation, Electronics Engineering, Manufacturing Operations, Manufacturing Processes, Manufacturing and Production, Manufacturing Standards, Electronics, Hardware Design, Process Improvement, Reliability, Electronic Components, Electronic Hardware, Hardware Architecture, Thermal Management
★ 4.7 (249) · Beginner · Specialization · 3 - 6 Months