Linux security courses can help you learn system hardening, user access controls, network security protocols, and incident response strategies. You can build skills in configuring firewalls, implementing encryption techniques, and conducting security audits. Many courses introduce tools like iptables for firewall management, OpenSSL for encryption, and Wireshark for network analysis, showing how these skills are applied in practical work to protect systems from vulnerabilities and threats.

The Hong Kong University of Science and Technology
Skills you'll gain: Requirements Analysis, Unified Modeling Language, Object Oriented Design, Functional Requirement, Data Modeling, Object Oriented Programming (OOP), Systems Development Life Cycle, System Requirements, Functional Specification, Diagram Design, Software Development, Software Engineering, Software Systems, Verification And Validation, Software Documentation, Model Evaluation, Project Planning, Project Management
★ 4.6 (392) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: WordPress, Web Design, Web Design and Development, Web Analytics and SEO, Content Management Systems, Web Content, Frontend Performance, Cloud Hosting, Web Servers, Web Development, Security Controls, Content Management, Computing Platforms, Software Installation, Role-Based Access Control (RBAC), User Accounts
★ 4.3 (36) · Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Verification And Validation, Health Systems, Systems Engineering, Healthcare Industry Knowledge, Health Care, Systems Integration, System Requirements, Requirements Analysis, Enterprise Architecture, Solution Design, Application Deployment
★ 4.7 (307) · Mixed · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Language Competency, Digital pedagogy, Grammar, English Language, Education Software and Technology, Language Learning, Vocabulary, Requirements Analysis
★ 4.7 (696) · Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Sustainable Development, Sustainable Systems, Water Sustainability, Nutrition and Diet, Food and Beverage, Nutrition Education, Public Health, Environmental Issue, Public Health and Disease Prevention, Environment and Resource Management, Health Disparities, Systems Thinking, Climate Change Adaptation, Climate Change Mitigation
★ 4.8 (194) · Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Loans, Lending and Underwriting, Blockchain, General Lending, Derivatives, FinTech, Market Liquidity, Financial Trading, Token Optimization, Securities (Finance), Digital Assets, Liquidation, Portfolio Management
★ 4.9 (317) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: AI Security, Responsible AI, Threat Modeling, Governance Risk Management and Compliance, Compliance Management, Risking, Data Ethics, Data Governance, Model Evaluation, Reinforcement Learning, Risk Management, Prompt Engineering, Governance, Regulatory Compliance, Security Testing, MLOps (Machine Learning Operations), MITRE ATT&CK Framework, Continuous Monitoring, Ethical Standards And Conduct, Vulnerability Assessments
★ 3.3 (15) · Intermediate · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: Generative AI, Responsible AI, AI literacy, Risking, AI Security, Social Impact, Intellectual Property, Leadership and Management, Data Quality
★ 4.7 (214) · Beginner · Course · 1 - 4 Weeks
University of Pennsylvania
Skills you'll gain: Demography, Market Trend, Trend Analysis, International Relations, International Finance, Socioeconomics, Social Sciences, Cultural Diversity, Political Sciences, Financial Systems, World History, Economic Development, Economics, Business Economics, Consumer Behaviour, Financial Policy, Public Safety and National Security, Governance
★ 4.8 (926) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Network Infrastructure, Networking Hardware, Cybersecurity, Digital Communications
★ 4.8 (62) · Beginner · Course · 1 - 4 Weeks

Technion - Israel Institute of Technology
Skills you'll gain: Materials science, Engineering, Scientific, and Technical Instruments, Semiconductors, Biomedical Technology, Medical Devices, Sensory Systems Analysis, Chemistry, Analytical Chemistry, Chemical Engineering, Manufacturing Processes
★ 4.8 (241) · Mixed · Course · 1 - 3 Months

University of Maryland, College Park
Skills you'll gain: Cryptography, Encryption, Cryptographic Protocols, Key Management, Cybersecurity, Communication Systems, Digital Communications, Authentications, Data Integrity, Algorithms
★ 4.6 (1.3K) · Mixed · Course · 1 - 3 Months