Internet Security courses can help you learn about network security protocols, encryption techniques, and threat detection methods. You can build skills in risk assessment, incident response, and implementing security policies. Many courses introduce tools like firewalls, intrusion detection systems, and antivirus software, demonstrating how these tools are used to protect sensitive data and maintain system integrity.

Johns Hopkins University
Skills you'll gain: Injury Prevention, Public Safety and National Security, Social Justice, Policty Analysis, Research, and Development, Public Policies, Policy Analysis, Public Health and Disease Prevention, Public Health, Health Disparities, Law, Regulation, and Compliance, Community Health
★ 4.7 (469) · Beginner · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: OSI Models, Network Security, Network Protocols, Network Performance Management, Network Architecture, Network Monitoring, Role-Based Access Control (RBAC), Network Troubleshooting, Network Administration, Computer Networking, TCP/IP, Network Planning And Design, Cybersecurity, Routing Protocols, Firewall, Network Routing, Network Analysis, IT Infrastructure, Cloud Computing, Automation
★ 4.8 (22) · Beginner · Specialization · 3 - 6 Months

University of Maryland, College Park
Skills you'll gain: Customer Retention, Loyalty Programs, Marketing Budgets, Brand Loyalty, Customer Acquisition Management, Competitive Analysis, Customer Analysis, Customer Relationship Management, Customer Insights, Data-Driven Marketing, Customer Relationship Building, Customer Data Management, Marketing Channel, Marketing Analytics, Online Advertising, Customer Engagement, Marketing Effectiveness, AI Personalization, Data Ethics, Digital Marketing
★ 4.6 (56) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Metasploit, Penetration Testing, Exploit development, Vulnerability Scanning, Malware Protection, Exploitation techniques, Database Management, Cyber Security Assessment, Security Testing, Cyber Security Strategy, Cyber Threat Intelligence, Cyber Operations, Vulnerability Assessments, Brute-force attacks, Cryptography, Cybersecurity, Intrusion Detection and Prevention, Linux, Linux Administration
★ 4.8 (93) · Beginner · Specialization · 3 - 6 Months

Dartmouth College
Skills you'll gain: Digital Transformation, Customer experience strategy (CX), Business Transformation, Data-Driven Decision-Making, Internet Of Things, Cloud Computing, Automation, Cloud Storage, Technology Strategies, Data Ethics, Cloud Infrastructure, Customer Insights, AI Personalization, Business Process Automation, Emerging Technologies, Responsible AI, Business Modeling, Cybersecurity, Operational Efficiency, Law, Regulation, and Compliance
★ 4.8 (24) · Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Java Platform Enterprise Edition (J2EE), Application Deployment, Web Applications, Application Servers, Java, Web Servers, Java Programming, Web Development, Server Side, Application Frameworks, Network Protocols
★ 4.5 (79) · Intermediate · Course · 1 - 4 Weeks

Alex Genadinik
Skills you'll gain: Vibe coding, Strategic Partnership, Brand Strategy, Email Automation, Branding, Generative AI Agents, Contract Negotiation, Product Knowledge, Closing (Sales), Entrepreneurship, AI Workflows, Negotiation, Order Management, Selling Techniques, E-Commerce, Blogs, Content Creation, Order Fulfillment, Agentic systems, Logistics Management
★ 4.5 (19) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Virtual Machines, Cloud Security, Public Cloud, Amazon Web Services, Scalability, Virtual Networking, Private Cloud, Cloud Computing Architecture, Cloud Platforms, Cloud Computing, Cloud Infrastructure, Cloud Services, Cloud Deployment
★ 4.4 (172) · Beginner · Guided Project · Less Than 2 Hours

University of California, Irvine
Skills you'll gain: Pay Per Click Advertising, Search Engine Marketing, Customer Retention, Digital Marketing, Paid media, Search Engine Optimization, Online Advertising, Keyword Research, Conversion Funnel Analysis, Digital Marketing Campaigns, Digital Advertising, Marketing Strategy and Techniques, Content Optimization, Marketing, Customer Acquisition Management, Customer Engagement, Lead Generation, Target Audience, Target Market
★ 4.7 (117) · Beginner · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Spring Boot, API Testing, Spring Framework, Restful API, Application Programming Interface (API), API Design, Data Persistence, Web Applications, Application Frameworks, Development Testing, Software Testing, Web Services, Object-Relational Mapping, Application Security, Authentications, Authorization (Computing), Network Protocols
★ 4.2 (29) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Generative AI, Responsible AI, Generative Model Architectures, AI Security, Data Ethics, Fine-tuning, LLM Application, AI literacy, AI Integrations, Artificial Intelligence, Microsoft Azure, Artificial Intelligence and Machine Learning (AI/ML), Back-End Web Development, Application Design, Deep Learning, Model Evaluation
★ 4.5 (13) · Intermediate · Course · 1 - 4 Weeks

Alibaba Cloud Academy
Skills you'll gain: Cloud Security, Network Security, General Networking, Operating System Administration, Network Architecture, Data Security, Application Security, Cloud Computing, Cloud Computing Architecture, Cloud Infrastructure, Operating Systems, Linux, Security Controls, Hardening, Distributed Denial-Of-Service (DDoS) Attacks, Vulnerability Management
★ 4.7 (62) · Beginner · Course · 1 - 3 Months