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.

Infosec
Skills you'll gain: Penetration Testing, Linux Commands, Command-Line Interface, Security Testing, Linux, Cybersecurity, Vulnerability Scanning, Operating Systems, Exploitation techniques, Microsoft Windows, File Systems, Mac OS
★ 4.6 (100) · Mixed · Course · 1 - 4 Weeks

University of Cambridge
Skills you'll gain: Criminal Investigation and Forensics, Molecular Biology, Healthcare Ethics, Specimen Collection, Scientific Methods, Molecular, Cellular, and Microbiology, Biostatistics, Life Sciences, Laboratory Techniques, Biotechnology, General Science and Research, Analytical Testing, Research, Biology, Emerging Technologies
★ 4.9 (14) · Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Object Oriented Programming (OOP), File I/O, Data Structures, Python Programming, Programming Principles, Computer Programming, Computational Logic, Software Engineering, Performance Tuning, Web Development, Performance Testing, Web Development Tools, Debugging, Software Development
★ 4.6 (72) · Beginner · Specialization · 1 - 4 Weeks

Institut Mines-Télécom
Skills you'll gain: Wireless Networks, Network Architecture, Software-Defined Networking, Network Planning And Design, Virtual Networking, Network Security, Service Oriented Architecture, Emerging Technologies, Network Protocols, Telecommunications, Mobile Security, Interoperability, Digital Communications, Authentications, Encryption, Authorization (Computing)
★ 4.6 (119) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Migration, Cloud Storage, Data Management, Data Integration, Data Storage, Data Infrastructure, Data Storage Technologies, Data Architecture, Data Security, File Systems, Data Loss Prevention
★ 4.8 (37) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), GitHub, Git (Version Control System), Version Control, CI/CD, File I/O, Object Oriented Programming (OOP), Test Automation, Test Data, Unit Testing, Test Case, Software Testing, Test Script Development, Programming Principles, Web Development Tools, Code Reusability, Test Execution Engine, Javascript, Browser Compatibility, Scripting
★ 4.5 (13) · Beginner · Specialization · 3 - 6 Months

Skillshare
Skills you'll gain: Adobe Illustrator, Color Theory, Color Matching, Graphics Software, Creative Design, Design, Graphical Tools, Graphic and Visual Design, Visualization (Computer Graphics), Data Import/Export, Computer Graphic Techniques, Computer Graphics, Design Software, Graphic Design, Creativity
★ 4.3 (7) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Logistic Regression, Web Scraping, Prompt Engineering, Rmarkdown, Regression Analysis, Responsible AI, Leaflet (Software), Generative AI, Statistical Modeling, Statistics, Statistical Analysis, Data Ethics, Applied Machine Learning, Root Cause Analysis, AI Product Strategy, AI Enablement, AI Integrations, AI Personalization, AI Orchestration, AI Workflows
★ 4.6 (87) · Intermediate · Specialization · 3 - 6 Months

University of Maryland, College Park
Skills you'll gain: Competitive Analysis, Value Propositions, Target Market, Target Audience, Product Improvement, Product Management, User Experience, Product Development, Product Design, Product Strategy, Customer Analysis, Product Planning, Agile Product Development, Market Analysis, Product Requirements, User Feedback, Product Testing, Continuous Improvement Process, Needs Assessment, Ideation
★ 4.6 (90) · Beginner · Course · 1 - 3 Months

Columbia University
Skills you'll gain: Care Coordination, Value-Based Care, Care Management, Patient Coordination, Clinical Informatics, Health Informatics, Interoperability, Health Technology, Healthcare Ethics, Clinical Leadership, Patient-centered Care, Healthcare Industry Knowledge, Health Systems, Health Care, Health Information Management, Primary Care, Telehealth, Health Policy, Data Sharing, Communication
★ 4.6 (161) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: White-Box Testing, Performance Testing, Maintainability, Test Tools, Software Testing, Code Review, Test Automation, Software Technical Review, Test Planning, Scripting, Risk Analysis, Performance Stress Testing, Software Quality Assurance, Application Security, Test Script Development, Continuous Integration, Code Coverage, Test Case, Quality Assurance, Security Testing
★ 3.9 (15) · Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Cyber Security Assessment, Cybersecurity, Scenario Testing, Simulations, Infrastructure Security, Computer Security Incident Management, Incident Response, Security Controls, Network Security, Role-Based Access Control (RBAC), Risk Management Framework, Disaster Recovery, Encryption
★ 4.6 (48) · Intermediate · Course · 1 - 4 Weeks