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.

Arizona State University
Skills you'll gain: Experimentation, Sample Size Determination, Research Design, Regression Analysis, Statistical Analysis, Science and Research, Scientific Methods, Statistical Methods, Data Analysis Software, Model Optimization, Statistical Software, Mathematical Software, Design Strategies, Sampling (Statistics), Probability & Statistics, Statistical Modeling, Statistical Inference, Mathematical Modeling, Statistical Hypothesis Testing, Variance Analysis
★ 4.7 (384) · Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: People Analytics, Report Writing, Statistical Reporting, Data Literacy, Business Reporting, Management Reporting, Data Presentation, Excel Formulas, Data Storytelling, Data Analysis, Business Writing, Microsoft Excel, Analytics, Statistical Methods, Plot (Graphics), Technical Communication, Statistical Hypothesis Testing, Executive Presence, Stakeholder Communications, Persuasive Communication
Advanced · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Terraform, Infrastructure as Code (IaC), Security Controls, AWS CloudFormation, Cloud Security, Cloud Infrastructure, Cloud Management, Multi-Cloud, Private Cloud, Power Platform CLI, Collaborative Software, Configuration Management, Command-Line Interface, Data Security, vCenter Server Management, Version Control, Data Migration, Resource Management, Mitigation
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Ggplot2, Software Documentation, Open Source Technology, R (Software), Plot (Graphics), Tidyverse (R Package), Package and Software Management, Web Scraping, Data Manipulation, Data Visualization Software, Leaflet (Software), R Programming, Data Wrangling, Data Visualization, Data Preprocessing, Technical Documentation, Visualization (Computer Graphics), Unit Testing, Object Oriented Programming (OOP), Object Oriented Design
★ 4.2 (1.5K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Microsoft Copilot, Power BI, Data Modeling, Data Analysis Expressions (DAX), Data Visualization Software, Interactive Data Visualization, Generative AI, Data Analysis, Data Transformation, Data Maintenance, Data Management, Data Import/Export
★ 4.6 (681) · Beginner · Course · 1 - 3 Months

Rice University
Skills you'll gain: Immunology, Public Health, Anatomy, Molecular Biology, Infectious Diseases, Medical Terminology, Cell Biology, Biochemistry, Microbiology, Biology
★ 4.7 (1.8K) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Web Scraping, Rmarkdown, R (Software), Leaflet (Software), R Programming, Interactive Data Visualization, Cloud Storage, Microsoft Azure, Data Ethics, Data Integration, Data Collection, Data Pipelines, Data Engineering, Big Data, Data Migration, Data Warehousing, Data Transformation, Data Modeling, Data Security, Database Management
Intermediate · Course · 1 - 3 Months

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

University of Pennsylvania
Skills you'll gain: Social Impact, Design Thinking, Performance Measurement, Innovation, Entrepreneurship, Business Modeling, Strategic Thinking, Ideation, Program Evaluation, Organizational Structure, Needs Assessment, Growth Strategies, Competitive Analysis, Market Analysis, Product Testing
★ 4.8 (1.5K) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Natural Language Processing, Microsoft Azure, Computer Vision, No-Code Development, Applied Machine Learning, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning, Predictive Modeling, Artificial Intelligence, AI literacy, Responsible AI
★ 4.7 (227) · Beginner · Course · 1 - 4 Weeks
Johns Hopkins University
Skills you'll gain: Epidemiology, Infection Control, Infectious Diseases, Public Health, Public Health and Disease Prevention, Program Management, Model Evaluation, Community Health, Performance Testing, Statistical Modeling, Decision Support Systems
★ 4.5 (1.3K) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: New Product Development, Product Management, Product Development, Product Lifecycle Management, Product Planning, Project Management Life Cycle, Product Design, Stakeholder Engagement, Stakeholder Management, Competitive Analysis, Product Testing, Product Requirements, Commercialization, Stakeholder Analysis, Market Analysis, Team Building, Stakeholder Communications, Market Research, Team Management
★ 4.7 (153) · Beginner · Course · 1 - 3 Months