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.

University of Colorado Boulder
Skills you'll gain: Statistical Modeling, Statistical Machine Learning, Data Science, Statistical Methods, Classification And Regression Tree (CART), Statistical Analysis, Model Evaluation, Regression Analysis, Predictive Modeling, R Programming, Statistical Inference, Logistic Regression, Model Training, Machine Learning, Classification Algorithms, Supervised Learning, Unsupervised Learning, Machine Learning Algorithms
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Overcoming Objections, Closing (Sales), Sales, Sales Strategy, Sales Process, Selling Techniques, Negotiation, Customer Success Management, Regional Sales, Marketing Automation, Customer Relationship Building, Customer Relationship Management, Customer Retention, Customer Engagement, Customer experience improvement, Personalized Service, Legal Technology, Contract Management, Document Management
Beginner · Course · 1 - 4 Weeks

L&T EduTech
Skills you'll gain: Artificial Intelligence, Internet Of Things, Unsupervised Learning, Python Programming, Machine Learning Algorithms, Deep Learning, Machine Learning, AI Integrations, Convolutional Neural Networks, Image Analysis, Artificial Neural Networks, Reinforcement Learning, Emerging Technologies, Healthcare 5.0, Data Preprocessing, Natural Language Processing, Model Evaluation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Ggplot2, Plot (Graphics), Tidyverse (R Package), Data Visualization, Statistical Visualization, Data Analysis, Exploratory Data Analysis, R Programming, Data Visualization Software, Data Wrangling, Data Manipulation, R (Software)
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Apache Airflow, Data Pipelines, Scalability, Feature Engineering, Extract, Transform, Load, Workflow Management, AI Workflows, AI Orchestration, Data Infrastructure, Data Integration, Database Design, Data Modeling, Data Architecture, Data Quality, Data Processing, Data Storage
Intermediate · Course · 1 - 4 Weeks

Copenhagen Business School
Skills you'll gain: Artificial Intelligence, Large Language Modeling, AI literacy, Natural Language Processing, Theoretical Computer Science, Statistical Machine Learning, Liberal Arts, Artificial Neural Networks, Grammar, Computational Thinking, Social Impact
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Surveys, Employee Surveys, Data Sharing, User Feedback, IT Management, User Accounts, Account Management
Beginner · Guided Project · Less Than 2 Hours

Alex Genadinik
Skills you'll gain: Video Production, Search Engine Optimization, Keyword Research, Product Promotion, Web Analytics and SEO, Social Media Content, Social Media Marketing, Content Optimization, Marketing Strategies, Strategic Partnership, Live Streaming, Social Media Strategy, Driving engagement, Promotional Strategies, Content Strategy, Online Advertising, Paid media, Performance marketing, Digital Advertising, Content Creation
Mixed · Course · 3 - 6 Months

Skills you'll gain: Content Scheduling, Social Media Management, Social Media Content, Facebook, Calendar Management, Social Media, Content Creation, Social Media Marketing, Driving engagement, Content Development and Management, Digital Publishing, Marketing, Graphic Design, Digital Marketing
Intermediate · Guided Project · Less Than 2 Hours

AI CERTs
Skills you'll gain: Clinical Informatics, Clinical Practices, AI Enablement, Health Care Procedure and Regulation, Healthcare Industry Knowledge, Health Care, Artificial Intelligence, Data-Driven Decision-Making, AI Workflows, Artificial Intelligence and Machine Learning (AI/ML), Health Administration, Generative AI Agents, Predictive Analytics
Intermediate · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Marketing Strategies, Data-Driven Marketing, Marketing Effectiveness, Email Marketing, Marketing Analytics, Digital Marketing, Driving engagement, Customer Relationship Management, Digital Advertising, Online Advertising, Google Ads, Social Media Marketing, Cross-Channel Marketing, Target Market, Personalized Campaigns, Data Collection
Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Systems Engineering, Requirements Analysis, Requirements Elicitation, Systems Development Life Cycle, Systems Development, Configuration Management, Engineering Management, Project Risk Management, Waterfall Methodology, Functional Requirement, Systems Analysis, Project Management, Risk Management, Systems Architecture, System Requirements
Intermediate · Course · 1 - 4 Weeks