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.

Skills you'll gain: Network Security, Remote Access Systems, Disaster Recovery, OSI Models, General Networking, Network Administration, Network Troubleshooting, Computer Networking, Network Architecture, Network Infrastructure, Networking Hardware, Network Monitoring, TCP/IP, Virtual Private Networks (VPN), Network Protocols, Cybersecurity, Computer Security, Data Centers, Virtualization, Authentications
★ 4.8 (26) · Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Canva (Software), Social Media Content, Social Media Campaigns, Content Creation, Visual Design, Social Media Marketing, Generative AI, Video Production, Content Marketing, Graphic Design, Video Editing, ChatGPT, Marketing Design, AI Workflows, Prompt Engineering, Content Strategy, Animations, Storytelling, Branding, Responsible AI
★ 4.4 (409) · Intermediate · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Cryptography, Brute-force attacks, Cryptographic Protocols, Encryption, Key Management, Cybersecurity, Computer Security, Information Assurance, Theoretical Computer Science, Threat Modeling, Communication Systems
★ 4.5 (551) · Intermediate · Course · 1 - 4 Weeks

28DIGITAL
Skills you'll gain: Real-Time Operating Systems, Embedded Software, Embedded Systems, Threat Modeling, Systems Architecture, Hardening, Debugging, Computer Architecture, Hardware Architecture, System Programming, Internet Of Things, Security Engineering, General Networking, Wireless Networks, Operating Systems, Performance Tuning, System Requirements, Network Protocols, OS Process Management
★ 4.4 (360) · Intermediate · Course · 1 - 3 Months

Imperial College London
Skills you'll gain: Analytical Skills, Science and Research, Sampling (Statistics), Statistical Hypothesis Testing, Data Literacy, Statistical Analysis, R (Software), Data Analysis, Statistical Software, Statistical Programming, Probability & Statistics, Statistical Methods, Data Analysis Software, R Programming, Statistics, Public Health, Statistical Inference, Descriptive Statistics, Probability Distribution
★ 4.7 (1.6K) · Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Session Initiation Protocols, Android Studio, Android Development, Internet Of Things, Communication Systems, Network Protocols, Telecommunications, Wireless Networks, Mobile Development, Digital Communications, Emerging Technologies, Application Development, Digital Signal Processing, Embedded Systems, Open Source Technology
★ 4.9 (1.6K) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Month End Closing, Balancing (Ledger/Billing), Variance Analysis, Fraud detection, Expense Management, Bookkeeping, Generally Accepted Accounting Principles (GAAP), Record Keeping, Reconciliation, Income Statement, Data Validation, Payroll Systems, Expense Reports, Financial Statements, Payroll Processing, Business Metrics, Financial Analysis, General Ledger, Financial Reporting, Accounts Payable
★ 3.9 (14) · Beginner · Specialization · 3 - 6 Months

LearnQuest
Skills you'll gain: Data Modeling, Oracle SQL Developer, Relational Databases, Database Design, Databases, SQL, Oracle Databases, Query Languages, Software Installation
★ 4.5 (31) · Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Microsoft 365, Microsoft Office, Collaborative Software, Cloud Services, Microsoft Power Automate/Flow, Microsoft Teams, Productivity Software, Microsoft Power Platform, Cloud-Based Integration, Endpoint Security, Cloud Computing, Cloud Storage, Security Software, Microsoft Windows, Data Security, Microsoft Outlook, Data Loss Prevention, Business Technologies, Microsoft Excel, Microsoft PowerPoint
★ 4.7 (149) · Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Swift Programming, Objective-C (Programming Language), iOS Development, Core Data (Software), Apple iOS, Video Game Development, Game Design, User Interface (UI), Model View Controller, JSON, User Interface (UI) Design, UI Components, Mobile Development, User Interface and User Experience (UI/UX) Design, OAuth, Memory Management, Responsive Web Design, Prototyping, Animation and Game Design, Human Computer Interaction
★ 4.5 (710) · Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Embedded Software, Real-Time Operating Systems, Embedded Systems, Software Architecture, Code Reusability, Pseudocode, Microarchitecture, Memory Management, Systems Architecture, Hardware Architecture, Computer Hardware, Electronic Hardware, System Programming, Computer Architecture, Software Design, Cross Platform Development, Systems Design, Software Design Patterns, Internet Of Things, Hardware Troubleshooting
★ 2.1 (7) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: ASP.NET, .NET Framework, Model View Controller, Authentications, C# (Programming Language), Web Development, Performance Tuning, Authorization (Computing), Web Applications, Object-Relational Mapping, Secure Coding, Content Management Systems, Scalability, API Testing, Data Validation
Intermediate · Course · 1 - 3 Months