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.

Johns Hopkins University
Skills you'll gain: Generative Adversarial Networks (GANs), AI Security, Fraud detection, Model Evaluation, Feature Engineering, Cybersecurity, Cyber Security Strategy, Reinforcement Learning, Model Optimization, Data Synthesis
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Exploitation techniques, Border Gateway Protocol, Malware Protection, Cybersecurity, Routing Protocols, Internet Of Things, Network Security, Cyber Attacks, Threat Detection, Network Monitoring, Network Routing, Network Analysis, Cyber Risk, Network Protocols, Vulnerability Assessments, Docker (Software), Containerization
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Microsoft Azure, Cloud Management, Virtual Machines, Kubernetes, Virtualization and Virtual Machines, Containerization, Cloud Storage, Cloud Computing, Infrastructure As A Service (IaaS), Data Storage, Data Storage Technologies, Cloud Deployment, Application Deployment, Data Management, IT Automation, Data Import/Export, Scalability
Intermediate · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Postman API Platform, Restful API, Authentications, Application Programming Interface (API), Scripting, JSON, Extensible Languages and XML, IT Automation, Extensible Markup Language (XML), API Testing, Network Protocols, YAML, Network Monitoring, Automation, Network Engineering, Scripting Languages, Python Programming, Real Time Data
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Mobile Security, Wireless Networks, Network Security, Application Security, Internet Of Things, Endpoint Security, Cybersecurity, Information Systems Security, Infrastructure Security, Penetration Testing, Exploitation techniques, Vulnerability Assessments, Data Security, Encryption
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Blockchain, Business Planning, Plan Execution, Strategic Thinking, Business Strategy, Strategic Decision-Making, FinTech, Strategic Partnership, Work Breakdown Structure, Decision Making, Market Opportunities, Solution Design, Proposal Development, Financial Services, Business Modeling, Market Analysis, Case Studies, Value Propositions, Market Research, Target Audience
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: User Accounts, Real Time Data, Authentications, Frontend Integration, Cloud Applications, Cloud Development, Application Development, Single Sign-On (SSO), Security Controls, NoSQL, Serverless Computing, Identity and Access Management, Data Management, Data Storage, Cloud Security
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Cloud Security, PostgreSQL, Database Administration, Google Cloud Platform, Authentications, Security Controls, Database Management, Identity and Access Management, Key Management
Beginner · Project · Less Than 2 Hours

Infosec
Skills you'll gain: C and C++, Exploit development, C (Programming Language), Security Testing, C++ (Programming Language), Secure Coding, Application Security, System Programming, Debugging, Vulnerability Assessments, Interoperability, White-Box Testing
Mixed · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Email Security, Gmail, Mobile Security, Google Workspace, Security Controls, Authentications, Cloud Security, Data Security, Multi-Factor Authentication, Identity and Access Management, Security Management, Endpoint Security, Enterprise Application Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Identity and Access Management, Cloud Infrastructure, Google Cloud Platform, Infrastructure As A Service (IaaS), Cloud Computing, Cloud Services, Cloud Management, Cloud Storage, Role-Based Access Control (RBAC), Data Storage, Authorization (Computing), Capacity Management, Key Management, Security Controls, Event Monitoring, System Monitoring
Intermediate · Course · 1 - 3 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, Program Development, Integrated Development Environments, Programming Principles
Beginner · Course · 1 - 4 Weeks