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.

Johns Hopkins University
Skills you'll gain: Health Informatics, Informatics, Health Care, Health Assessment, Healthcare Project Management, Systems Analysis, Business Systems Analysis, Technical Communication, Requirements Analysis, Data Access, Process Modeling
★ 4.8 (68) · Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Conversion Funnel Analysis, Marketing Effectiveness, Marketing Analytics, Google Analytics, Web Analytics, Digital Marketing Campaigns, Verification And Validation, Goal Setting, Web Analytics and SEO, Performance Metric, Transaction Processing, System Testing
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: Apache Airflow, Service Level Agreement, Data Pipelines, Workflow Management, Dependency Analysis, Scalability, Service Level, System Monitoring
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: DevSecOps, DevOps, Application Security, Secure Coding, Security Testing, Continuous Delivery, CI/CD, Continuous Integration, Containerization, Vulnerability Scanning, Vulnerability Management, Security Management, Automation
★ 4.4 (23) · Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Sales Presentation, Sales Presentations, Closing (Sales), Negotiation, Data Visualization, Selling Techniques, Presentations, B2B Sales, Influencing, Persuasive Communication, Storytelling, Behavioral Economics, Overcoming Objections, Value Propositions, Rapport Building
Intermediate · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: CrewAI, AI Workflows, AI Orchestration, Agentic Workflows, Generative AI Agents, Agentic systems, LLM Application, Automation, Artificial Intelligence and Machine Learning (AI/ML), Model Context Protocol, Context Engineering, Artificial Intelligence, System Monitoring, Workflow Management, Context Management, Tool Calling, Continuous Monitoring, Scalability, Memory Management, Large Language Modeling
★ 4.5 (12) · Beginner · Course · 1 - 4 Weeks

28DIGITAL
★ 4.5 (116) · Intermediate · Course · 1 - 3 Months

Splunk Inc.
Skills you'll gain: Splunk, Data Visualization, Data Presentation, Data Visualization Software, Dashboard Creation, Dashboard, Ad Hoc Reporting, Business Intelligence, Data Analysis, Big Data, Data Science, Event Monitoring, Query Languages, Incident Response, Business Analysis, Role-Based Access Control (RBAC), Geospatial Mapping
★ 4.6 (228) · 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 (233) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Infrastructure, Google Cloud Platform, Infrastructure As A Service (IaaS), Cloud Computing Architecture, Cloud Deployment, Infrastructure Architecture, Cloud Computing, Cloud Platforms, Private Cloud, Network Infrastructure, Virtual Networking, Virtual Machines, Cloud Storage, Cloud Management, Cloud Services, Network Architecture, Virtualization and Virtual Machines, Command-Line Interface, Firewall, Network Routing
★ 4.6 (218) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Flutter (Software), UI Components, Mobile Development, Google Cloud Platform, User Interface (UI), Application Development, Cross Platform Development, Web Development, Network Security
★ 4.1 (15) · Beginner · Project · Less Than 2 Hours