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.

Banco Interamericano de Desarrollo
Skills you'll gain: Digital Transformation, Cybersecurity, Data Management, Big Data, Talent Management, Human Capital, Infrastructure Security, Interoperability, Analytics, Economics, Policy, and Social Studies, Data Security, Administration, Project Design, Public Policies, Data Governance, digital literacy, Policy Development, Public Administration, Process Improvement, Project Management
★ 4.8 (140) · Beginner · Specialization · 1 - 3 Months

Microsoft
Skills you'll gain: Role-Based Access Control (RBAC), Azure Active Directory, Microsoft Azure, Cyber Governance, System Monitoring, Identity and Access Management, Cloud Security, Enterprise Security, Data Security, Authorization (Computing), User Provisioning, Multi-Factor Authentication, Cyber Security Policies
★ 4.7 (23) · Intermediate · Course · 1 - 4 Weeks

Dartmouth College
Skills you'll gain: Memory Management, C (Programming Language), Embedded Systems, Software Visualization, Computer Engineering, Embedded Software, System Programming, Computer Programming, Data Structures, Linux
★ 4.7 (65) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Microbiology, Pharmacology, Sensory Systems Analysis, Health Disparities, Drug Interaction, Pharmacotherapy, Molecular Biology, Infection Control, Infectious Diseases, Biochemistry, Psychology, Molecular, Cellular, and Microbiology, Sociology, Cultural Sensitivity, Analytical Chemistry, Immunology, Behavior Management, Biology, Decision Making, Taxonomy
★ 4.6 (14) · Intermediate · Professional Certificate · 3 - 6 Months

University of Colorado System
Skills you'll gain: Prompt Engineering, Vibe coding, Debugging, Large Language Modeling, LLM Application, AI Security, Application Programming Interface (API), Responsible AI, Development Environment, AI Integrations, Computer Programming Tools, No-Code Development, Systems Integration, Program Development
★ 4.5 (26) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Semiconductors, Manufacturing Standards, Production Process, Manufacturing Operations, Manufacturing Processes, Electronics, Manufacturing and Production, Process Control, Process Engineering, Technical Standard, Materials science, Facility Management, Infrastructure Architecture, Infrastructure Security, Security Controls, Network Infrastructure, Analysis
Intermediate · Course · 1 - 4 Weeks
Microsoft
Skills you'll gain: Fine-tuning, Generative AI, Model Optimization, Large Language Modeling, Data Ethics, LLM Application, Responsible AI, Feature Engineering, AI Security, Advertising, Marketing, Anomaly Detection, Data Synthesis, Information Privacy
★ 4.5 (27) · Intermediate · Course · 1 - 3 Months

Alfaisal University | KLD
Skills you'll gain: Event Management, Events and Conferences, Event Planning, Event Marketing, Advertising, Safety and Security, Cost Management, Security Management, Advertising Campaigns, Promotional Strategies, Budget Management, Expense Management, Program Evaluation, Human Resources Management and Planning, Human Resources, Budgeting, Return On Investment, Communication Strategies
★ 4.7 (119) · Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Penetration Testing, Metasploit, Safety Culture, Cyber Threat Hunting, Cyber Threat Intelligence, Cyber Security Assessment, Cybersecurity, Threat Detection, Generative AI, Security Testing, Vulnerability Scanning, Anomaly Detection, Data Security, Security Strategy, Network Security, Security Software, Change Management, Machine Learning Methods, Ethical Standards And Conduct, Data Visualization
Beginner · Specialization · 1 - 3 Months

Packt
Skills you'll gain: Threat Detection, Cybersecurity, Intrusion Detection and Prevention, Cyber Threat Intelligence, Network Infrastructure, Network Security, Network Architecture, General Networking, Endpoint Security, Malware Protection, System Monitoring, Incident Response, Email Security, Operating Systems, Identity and Access Management
★ 4.9 (7) · Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Salesforce, Salesforce Development, Data Security, Data Access, Customer Relationship Management (CRM) Software, Security Controls, Customer Engagement, Role-Based Access Control (RBAC), Customer Service, Data Maintenance, Business Reporting, Data Management, Personalized Service, Workflow Management, Process Development, Process Design, Lead Generation, Business Process Automation, Cloud Computing, Automation
★ 4.6 (32) · Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: File Systems, Digital Forensics, Microsoft Windows, File Management, Operating Systems, Data Structures, Data Validation, File I/O, Data Storage
★ 4.7 (81) · Intermediate · Course · 1 - 3 Months