Network security courses can help you learn about firewalls, intrusion detection systems, and encryption protocols. You can build skills in risk assessment, incident response, and vulnerability management. Many courses introduce tools like Wireshark for network analysis, Nessus for vulnerability scanning, and various security information and event management (SIEM) systems, showing how these skills are applied in practical work to protect networks from cyber threats.

University of Colorado Boulder
Skills you'll gain: Model Based Systems Engineering, Systems Engineering, Requirements Analysis, Test Engineering, Systems Thinking, Systems Architecture, Test Planning, Systems Design, Aerospace Basic Quality System Standards, Systems Analysis, Systems Development, Risk Management Framework, Requirements Elicitation, System Testing, System Requirements, Acceptance Testing, Development Testing, Verification And Validation, Failure Analysis
★ 4.8 (96) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Interviewing Skills, Meta Ads Manager, Marketing Analytics, Registration, Marketing, Social Media Marketing, Digital Marketing, Data Analysis, Statistics
★ 4.7 (228) · Beginner · Course · 1 - 4 Weeks

Nanjing University
Skills you'll gain: C (Programming Language), Computer Systems, Data Structures, System Programming, System Software, Programming Principles, Computer Architecture, Computer Programming, Secure Coding, Operating Systems, Hardware Architecture, Data Storage, Memory Management, Computer Hardware, Application Security, Build Tools
★ 4.7 (59) · Mixed · Course · 1 - 3 Months

Coursera
Skills you'll gain: Bookkeeping, Balancing (Ledger/Billing), Accounting Records, Ledgers (Accounting), Cash Management, Cash Flows, General Accounting, General Ledger, Financial Reporting, Record Keeping, Financial Statements, Equities
Beginner · Course · 1 - 4 Weeks

University of Maryland, College Park
Skills you'll gain: Android (Operating System), Android Development, Mobile Development, Data Management, User Interface (UI), Human Computer Interaction, Event-Driven Programming, Network Model, Geographic Information Systems, Interactive Design, Geospatial Information and Technology, Data Storage, Animations, Computer Programming, Computer Graphics
★ 4.7 (172) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Responsible AI, Data Ethics, Organizational Strategy, AI Product Strategy, AI Enablement, Strategic Leadership, Cross-Functional Collaboration, Governance, Artificial Intelligence and Machine Learning (AI/ML), Decision Making, Business Ethics, Technology Roadmaps, Ethical Standards And Conduct, Cross-Functional Team Leadership, Data Governance, Organizational Structure, Scalability, Risk Mitigation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Disaster Recovery, Business Continuity Planning, Contingency Planning, Business Continuity, Benchmarking, Business Risk Management, Data Loss Prevention, Security Management, Risk Mitigation, Risk Analysis, Information Assurance, Data Maintenance, Data Strategy, Procedure Development, General Data Protection Regulation (GDPR), Program Standards, Personally Identifiable Information, Crisis Management, Law, Regulation, and Compliance, Continuous Monitoring
★ 4.6 (52) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Public Key Infrastructure, Cryptography, Key Management, Encryption, Windows Servers, Cryptographic Protocols, Infrastructure Security, Web Servers, Active Directory, Digital Communications, Microsoft Servers, Network Infrastructure, Authentications, Server Administration, System Configuration, Data Integrity, Data Migration
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Reconciliation, QuickBooks (Accounting Software), Spreadsheet Software, Accounting Records, Investigation, Variance Analysis, Financial Statements, Accounts Payable, Financial Controls, Fraud detection, Analysis, Billing & Invoicing, Verification And Validation, Payment Processing
Beginner · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Software Development Life Cycle, CI/CD, DevOps, Software Development Methodologies, Devops Tools, Continuous Integration, Agile Software Development, Project Management, Software Development, Continuous Deployment, Application Development, Application Deployment, Software Development Tools, Software Testing, Agile Project Management, Waterfall Methodology, Agile Methodology, Kanban Principles, Scrum (Software Development), Automation
★ 4.8 (122) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: TCP/IP, Network Routers, Network Routing, Network Security, General Networking, Remote Access Systems, Network Administration, Network Protocols, Network Infrastructure, Network Troubleshooting, Network Switches, System Configuration, Verification And Validation
★ 4.8 (9) · Intermediate · Course · 1 - 4 Weeks

Cisco Learning and Certifications
Skills you'll gain: Network Model, Network Protocols, IT Automation, Network Routing, Data Modeling, Extensible Markup Language (XML), JSON, Automation, Restful API, Data Structures, Configuration Management
★ 4.8 (15) · Intermediate · Course · 1 - 4 Weeks