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.

University of Colorado System
Skills you'll gain: Data Encryption Standard, Public Key Infrastructure, Cryptography, Cybersecurity, Key Management, Advanced Encryption Standard (AES), Encryption, Cryptographic Protocols, Public Key Cryptography Standards (PKCS), Brute-force attacks, Authentications, Arithmetic, Algorithms, Applied Mathematics, Probability, Computer Science
★ 4.6 (1K) · Beginner · Specialization · 3 - 6 Months

Microsoft
Skills you'll gain: Stored Procedure, Star Schema, Microsoft SQL Servers, Database Design, Transact-SQL, SQL, Data Integrity, Database Architecture and Administration, Transaction Processing, Database Development, Database Management, Data Integration, Relational Databases, Power BI, Data Warehousing, Data Maintenance, Query Languages, Database Administration, Database Systems, Data Management
★ 4.5 (322) · Beginner · Professional Certificate · 3 - 6 Months
University of London
Skills you'll gain: Computer Science, Computer Systems, Web Applications, Computer Literacy, General Networking, Network Security, Computer Networking, Application Security, Computational Thinking, Debugging, Cybersecurity, Problem Management
★ 4.6 (582) · Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Cloud Security, Compliance Management, Cloud Management, Security Strategy, Regulatory Compliance, Security Management, Governance Risk Management and Compliance, Cloud Computing, Cloud Platforms, Microsoft Azure, Personally Identifiable Information, Business Continuity, Business Continuity Planning, Cyber Governance, Control Objectives for Information and Related Technology (COBIT), Law, Regulation, and Compliance, Cloud Standards, Data Security, Threat Detection, Data Management
★ 4.8 (172) · Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Rust (Programming Language), Containerization, Data Pipelines, CI/CD, Docker (Software), Jenkins, Application Deployment, DevOps, LLM Application, Continuous Integration, Hugging Face, Unit Testing, Large Language Modeling, Test Case, Restful API, Serverless Computing, Command-Line Interface, Natural Language Processing, Computer Programming, Cloud Computing
★ 3.9 (310) · Beginner · Specialization · 3 - 6 Months

University of Pennsylvania
Skills you'll gain: Civil Procedures, Court Systems, Political Sciences, Case Law, Public Safety and National Security, Jury Trial, Social Justice, Governance, Case Studies, Health Policy
★ 4.8 (1.3K) · Beginner · Course · 1 - 4 Weeks
Johns Hopkins University
Skills you'll gain: Clinical Data Management, Data Quality, Quality Assurance, Clinical Trial Management Systems, Case Report Forms, Clinical Trials, Data Maintenance, Clinical Monitoring, Data Cleansing, Data Management, Data Integrity, Clinical Research, Microsoft Excel, Data Compilation, Data Collection, Data Sharing, Data Security, Treatment Planning, Statistical Analysis
★ 4.7 (193) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Database Design, Relational Databases, Databases, SQL, Big Data, Database Systems, Database Management Systems, NoSQL, Operational Databases, Data Warehousing, Data Management, Query Languages, Virtual Machines, Data Storage, Data Analysis, Unstructured Data
★ 4.7 (1.1K) · Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Internet Of Things, Networking Hardware, Network Infrastructure, Network Routers, General Networking, Embedded Software, Network Switches, Network Protocols, Network Architecture, Security Controls, Wireless Networks, Network Administration, Network Routing, Infrastructure Security, Local Area Networks, Telecommunications, Communication Systems, Distributed Computing, Python Programming, Machine Learning
★ 4.7 (632) · Intermediate · Specialization · 3 - 6 Months

SkillsBooster Academy
Skills you'll gain: Prompt Engineering, Prompt Patterns, Organizational Skills, Planning, Action Oriented, Prioritization, Goal Setting, Productivity, AI Personalization, Time Management, Presentations, Personal Development, Writing and Editing, ChatGPT, Microsoft Copilot, Decision Making, Google Workspace, Generative AI, Research, Professional Development
Beginner · Course · 1 - 3 Months
Skills you'll gain: Blockchain, Digital Assets, FinTech, Business Planning, Plan Execution, Agentic systems, Strategic Thinking, Business Strategy, Strategic Decision-Making, Payment Systems, Governance, Financial Inclusion, Financial Services, Strategic Partnership, Financial Regulation, Ledgers (Accounting), Work Breakdown Structure, Cryptography, Emerging Technologies, Stakeholder Analysis
★ 4.7 (1K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Information Technology, Computer Hardware, Cloud Computing, Network Troubleshooting, Software Installation, Technical Support and Services, Help Desk Support, Cybersecurity, Cloud Infrastructure, Cyber Attacks, Information Technology Operations, Data Storage, General Networking, Database Software, Operating Systems, Computer Networking, Package and Software Management, Computer Security Awareness Training, IT Infrastructure, Project Management
★ 4.7 (288) · Beginner · Course · 1 - 3 Months