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.

Johns Hopkins University
Skills you'll gain: Home Health Care and Assisted Living, Infection Control, Personal protective equipment, Hand Hygiene, Emergency Response, Long Term Care, Nursing Homes, Patient Communication, Public Health and Disease Prevention, Laboratory Testing, Mental Health, Community Health, Public Health, Care Coordination, Media and Communications, Patient Education and Support, Epidemiology, Diagnostic Tests, Cleanliness, Infectious Diseases
Beginner · Course · 1 - 3 Months

Skills you'll gain: Software Documentation, Generative AI, API Testing, Test Automation, Design Software, Mockups, User Interface (UI), Software Development Tools, User Interface and User Experience (UI/UX) Design, Software Testing, AI Security, Application Security, Maintainability, Prompt Engineering, Test Case, Software Architecture, Code Review, Secure Coding, Artificial Intelligence, Debugging
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Data Wrangling, Exploratory Data Analysis, Data Presentation, Data Visualization, Data Collection, Predictive Modeling, Interactive Data Visualization, Web Scraping, Shiny (R Package), Ggplot2, Data Analysis, Data Manipulation, Data Cleansing, Statistical Modeling, Predictive Analytics, Tidyverse (R Package), Regression Analysis, Data Transformation, Data Science, Dashboard
Intermediate · Course · 1 - 3 Months

Erasmus University Rotterdam
Skills you'll gain: Econometrics, Data Collection, Regression Analysis, Statistical Methods, Survey Creation, Quantitative Research, Statistical Hypothesis Testing, Descriptive Statistics, Statistical Analysis, Correlation Analysis, Probability Distribution
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Statistical Hypothesis Testing, Descriptive Statistics, Statistical Visualization, Data Transformation, Data Cleansing, Statistical Analysis, Regression Analysis, Statistical Programming, R (Software), Probability, Probability Distribution, Sampling (Statistics), Box Plots, Histogram, R Programming, Statistical Methods, Statistical Software, Microsoft Excel, Statistics, Data Analysis
Beginner · Specialization · 3 - 6 Months

LearnKartS
Skills you'll gain: JUnit, File I/O, Object Oriented Design, Java Programming, Object Oriented Programming (OOP), Java, Unit Testing, Maintainability, Software Development, Secure Coding, Software Testing, Programming Principles, Computer Programming, Application Development, Authentications, Code Reusability, Android Development, Application Design, Debugging, Performance Tuning
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Databricks, Model Deployment, Responsible AI, Model Training, Microsoft Azure, Data Science, Applied Machine Learning, Data Integration, MLOps (Machine Learning Operations), Predictive Modeling, Model Evaluation, Machine Learning Methods, Machine Learning, Data Preprocessing
Intermediate · Course · 1 - 3 Months

University of Cape Town
Skills you'll gain: Informed Consent, Healthcare Ethics, Scientific Methods, Intensive Care Medicine, Diagnostic Tests, Diversity Awareness, Dignity in Care, Cultural Diversity, Patient Education and Support, Critical Care, Ethical Standards And Conduct, Cultural Sensitivity, Patient Communication
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Database Administration, Programming Principles, Computer Programming, Artificial Intelligence, Cloud Services, Network Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Workflows, Generative AI Agents, Agentic Workflows, Artificial Intelligence and Machine Learning (AI/ML), Agentic systems, Microsoft Azure, LLM Application, Artificial Intelligence, AI Integrations, Model Deployment, Prompt Engineering, Application Deployment, Program Development, GitHub, Development Environment, Software Development, Natural Language Processing, Technical Documentation
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: User Research, Prototyping, Wireframing, Interactive Design, User Interface and User Experience (UI/UX) Design, Systems Design, User Flows, Collaborative Software, Design, Design Specifications, Persona Development, User Interface (UI) Design, UI Components, Design Software, Technical Documentation, Ideation, Animations, Design Elements And Principles
Intermediate · Professional Certificate · 3 - 6 Months

Universitat de Barcelona
Skills you'll gain: Specimen Preparation, Specimen Processing, Laboratory Techniques, Materials science, Laboratory Equipment, Engineering, Scientific, and Technical Instruments, Biomedical Technology, Analytical Testing, Molecular, Cellular, and Microbiology, Image Analysis, Structural Analysis
Mixed · Course · 1 - 3 Months