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.

LearnQuest
Skills you'll gain: Sales Pipelines, Overcoming Objections, Sales Management, Sales Process, Team Motivation, Sales Development, Performance Analysis, Regional Sales, Selling Techniques, Team Performance Management, Prospecting and Qualification, Sales Enablement, Sales Training, Sales, Performance Measurement, Dashboard, Management Training And Development, Customer Relationship Management (CRM) Software, Business Ethics, Customer Relationship Management
Beginner · Course · 1 - 4 Weeks

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, Statistical Visualization, Sampling (Statistics), Data Visualization Software, Statistical Hypothesis Testing, Data Analysis, Data Manipulation, Web Scraping, Data Science, R (Software), Data Analysis Software
★ 4.5 (110) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Sprint Retrospectives, Timelines, Project Schedules, Workflow Management, Campaign Management, Project Management, Project Management Software, Marketing Effectiveness, Organizational Skills, Digital Marketing Campaigns, Sprint Planning, Process Management, Project Planning, Agile Methodology, Process Improvement, Performance Analysis
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Cloud Security, PostgreSQL, Database Administration, Google Cloud Platform, Authentications, Security Controls, Database Management, Identity and Access Management, Key Management
★ 4.9 (8) · Beginner · Project · Less Than 2 Hours

Coursera
Skills you'll gain: Postman API Platform, API Testing, Data Validation, Application Programming Interface (API), Restful API, Verification And Validation, Performance Tuning, Microservices, Performance Testing, Test Tools, Security Controls, Data Integrity, Authentications
★ 4.6 (19) · Intermediate · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Scalability, Distributed Computing, Dataflow, Event-Driven Programming, Microservices, System Design and Implementation, Software Architecture, Data Pipelines, Software Design Patterns, Software Design, Functional Design, Cloud Computing
★ 3.9 (31) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Agentic Workflows, Prompt Engineering, Agentic systems, Prompt Patterns, AI Workflows, Generative AI Agents, AI Personalization, Context Engineering, AI literacy, Human Computer Interaction, Human Centered Design, Responsible AI, Experience Design, User Flows, Design Strategies
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Web Development Tools, Development Environment, Frontend Integration, Software Development Tools, Program Development, Integrated Development Environments, Application Deployment, Transaction Processing, Application Design, Front-End Web Development, Event-Driven Programming, Development Testing, Javascript, Network Architecture
★ 5 (50) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Linux, Scripting, Linux Administration, Linux Commands, Scripting Languages, Operating System Administration, Data Persistence, Bash (Scripting Language), Shell Script, Unix Shell, Systems Administration, IT Automation, Software Installation, Data Store, Command-Line Interface, Cloud Hosting, Object-Relational Mapping, YAML, System Programming, Python Programming
★ 4.8 (48) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Enterprise Risk Management (ERM), Continuous Monitoring, Medical Privacy, Risk Management, Risk Management Framework, Health Information Management, Governance Risk Management and Compliance, Health Care Procedure and Regulation, Risk Mitigation, Risk Control, Information Privacy, Patient Safety, ISO/IEC 27001, Security Controls, Information Assurance, Data Security, Compliance Management, Data Integrity
★ 4.5 (13) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Human Machine Interfaces, Network Protocols, Communication Systems, System Configuration, Remote Access Systems, Automation, Web Servers, Scripting, System Monitoring, Systems Integration, Authorization (Computing), Algorithms, Data Structures
Advanced · Course · 3 - 6 Months

Pontificia Universidad Católica del Perú
Skills you'll gain: Data Preprocessing, Data Transformation, Data Wrangling, Business Analytics, Anomaly Detection, Data Processing, R (Software), Analytics, Data Cleansing, R Programming, Data Analysis, Project Management Life Cycle, Business Analysis, Statistical Programming, Data Science, Exploratory Data Analysis, Dimensionality Reduction, Big Data, Supervised Learning
★ 4.3 (65) · Beginner · Course · 1 - 3 Months