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: Red Hat Enterprise Linux, Linux Administration, Operating System Administration, Linux Servers, Hardening, Linux, Package and Software Management, Systems Administration, Configuration Management, System Configuration, Linux Commands, System Monitoring, Information Technology Operations, Servers, Vulnerability Scanning, Security Controls, User Provisioning, Patch Management, Network Performance Management, Vulnerability Assessments
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

Johns Hopkins University
Skills you'll gain: Tidyverse (R Package), Ggplot2, Data Wrangling, Statistical Modeling, Exploratory Data Analysis, Plot (Graphics), R Programming, Data Import/Export, Predictive Modeling, Data Visualization, Interactive Data Visualization, Statistical Visualization, Sampling (Statistics), Data Visualization Software, Statistical Hypothesis Testing, Data Analysis, Web Scraping, Data Science, R (Software), Data Analysis Software
★ 4.5 (111) · Beginner · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Snowflake Schema, Performance Tuning, Data Architecture, User Accounts, Data Warehousing, SQL, Database Architecture and Administration, Database Management, Data Modeling, Data Transformation, Data Import/Export, Cloud Computing Architecture, Data Integration, Cloud-Based Integration, Role-Based Access Control (RBAC), Data Governance, Data Security
★ 3 (30) · Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Cyber Governance, Security Strategy, Security Management, Incident Management, Cyber Security Strategy, Business Continuity Planning, IT Security Architecture, Computer Security Incident Management, Business Continuity, Disaster Recovery, Cyber Security Policies, Cybersecurity, Incident Response, Data Governance, Governance, Contingency Planning, Security Controls, Asset Management, Cyber Security Assessment, Risk Analysis
★ 4.6 (55) · Mixed · Course · 3 - 6 Months

Skills you'll gain: Star Schema, Snowflake Schema, Data Lakes, Data Warehousing, CI/CD, Database Design, Microsoft Azure, Power BI, Data Governance, Continuous Integration, Real Time Data, Data Pipelines, Microsoft Copilot, Transaction Processing, Data Architecture, Model Optimization, Transact-SQL, Enterprise Architecture, SQL, Cloud Infrastructure
★ 3.6 (10) · Intermediate · Professional Certificate · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Image Analysis, Computer Vision, Deep Learning, Convolutional Neural Networks, Machine Learning Methods, Data Ethics, Microsoft Excel, Generative AI, Excel Formulas, Responsible AI, Data Transformation, Linear Algebra, Feature Engineering, Digital Signal Processing
★ 4.5 (44) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Cryptography, Cryptographic Protocols, Data Integrity, Encryption, Authentications, Data Security, Data Encryption Standard, Advanced Encryption Standard (AES), Digital Communications
★ 4.5 (102) · Intermediate · Course · 1 - 4 Weeks

University of Maryland, College Park
Skills you'll gain: Cybersecurity, Cyber Security Policies, Cyber Risk, Risk Management, Cyber Governance, Cyber Attacks, Stakeholder Engagement, Risk Mitigation, Business Risk Management, Cyber Security Strategy, Risk Management Framework, Stakeholder Communications, Operational Risk, Enterprise Risk Management (ERM), Security Management, Information Systems Security, Risk Analysis, Threat Management, Security Controls, Information Assurance
★ 4.4 (13) · Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Data Quality, Extract, Transform, Load, Anomaly Detection, Data Pipelines, Data Maintenance, Data Validation, Analysis, Data Integrity, Dependency Analysis, Dataflow, Data Analysis, Analytics, Continuous Monitoring, Data Transformation, Dashboard, SQL
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: File Systems, Digital Forensics, Microsoft Windows, File Management, Operating Systems, Data Structures, Data Validation, Data Storage Technologies, Data Storage, Computer Hardware, Digital Analysis
★ 4.7 (89) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Data-Driven Marketing, Google Ads, Google Analytics, Marketing Analytics, Data Integration, Web Analytics, Data Access
Beginner · Course · 1 - 4 Weeks