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.

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Frontend Integration, Application Programming Interface (API), Restful API, Web Applications, Application Security, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Threat Management, Threat Detection, Software-Defined Networking, Network Architecture, Network Planning And Design, Network Security, Cloud-Based Integration, Network Infrastructure, Internet Of Things, Multi-Cloud, Wide Area Networks, Technical Consulting
Intermediate · Course · 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: Spatial Analysis, NoSQL, Geospatial Mapping, Geographic Information Systems, Geospatial Information and Technology, Big Data, MongoDB, File Systems, Databases, Apache Hadoop, Distributed Computing, Data Architecture, Cloud Computing, Apache Spark, Public Cloud, Database Systems, Data Processing, Scalability, Environmental Monitoring, Climate Change Programs
Beginner · Specialization · 3 - 6 Months

DeepLearning.AI
Skills you'll gain: Retrieval-Augmented Generation, Vector Databases, Anomaly Detection, Embeddings, LLM Application, Generative AI, Semantic Web, Application Design, Natural Language Processing, Image Analysis, AI Personalization
Beginner · Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Frontend Integration, Web Components, JavaScript Frameworks, Microarchitecture, Web Development Tools, Front-End Web Development, CI/CD, Web Design, Secure Coding, Software Design, Scalability, Server Side, Maintainability, Debugging
Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Financial Statements, Financial Analysis, Cash Flows, Budgeting, Financial Acumen, Financial Forecasting, Cash Flow Forecasting, Profit and Loss (P&L) Management, Finance, Accounting, Key Performance Indicators (KPIs), Business Acumen, Financial Management, Corporate Finance
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Node.JS, Scalability, Authentications, JSON, Authorization (Computing), Web Development Tools, Web Applications, Web Development, Server Side, Back-End Web Development, Application Frameworks, Javascript, Restful API, Development Environment, Operating Systems, Email Automation, Microsoft Visual Studio
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Data-Driven Decision-Making, Descriptive Statistics, Data Analysis, Probability Distribution, Statistical Software, Statistics, R (Software), Data Visualization, Statistical Analysis, Probability, R Programming, Probability & Statistics, Data Manipulation, Histogram, Taxonomy, Data Import/Export
Beginner · Course · 1 - 3 Months

Goodwill Industries International
Skills you'll gain: digital literacy, Computer Literacy, Disabilities, Web Content Accessibility Guidelines, Diversity Awareness, Digital Communications, Community Development, Community Outreach, End User Training and Support, Advocacy, Telecommunications, Ethical Standards And Conduct, Data Access, Requirements Analysis
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Information Privacy, Personally Identifiable Information, Document Management, Data Governance, Law, Regulation, and Compliance, Training Programs, Compliance Training, Security Awareness, Employee Training, Data Access, Auditing
Mixed · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Vulnerability Scanning, Network Security, Network Administration, Network Protocols, Network Analysis, TCP/IP, File Transfer Protocol (FTP), Software Installation, Ubuntu, Command-Line Interface, Open Source Technology
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Email Automation, Agentic Workflows, AI Workflows, Multimodal Prompts, Tool Calling, Calendar Management, Machine Learning Methods, Scheduling, AI Security, Text Mining, Classification Algorithms, JSON
Intermediate · Course · 1 - 3 Months