Courses from 1000+ universities
17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.
600 Free Google Certifications
Personal Creativity
Entrepreneurship
Instructional Design
Ecology and Wildlife Conservation
The Science of Well-Being
Mountains 101
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Discover how browser extensions can exploit security vulnerabilities in MV3, including webcam hijacking, credential theft, and arbitrary code execution, while learning protective measures against these threats.
Delve into SSH security vulnerabilities, implementation challenges, and exploitation techniques across various platforms, featuring the new open-source testing tool 'sshamble'.
Uncover security vulnerabilities in Chinese IME keyboards' network protocols and how attackers can intercept keystrokes from 800 million users due to poorly implemented encryption methods.
Discover how Relative Path File Injection attacks can turn trusted websites into malware delivery platforms, exploring detection methods and real-world implementations through practical demonstrations.
Uncover groundbreaking vulnerabilities in aviation's TCAS II collision avoidance system, exploring RF attack methods that can manipulate traffic advisories and disable critical safety features in aircraft.
Master the art of mechanical safe manipulation through expert techniques, wheel isolation methods, and vulnerability analysis for Group 2 locks, enhancing your locksport knowledge.
Discover how lasers and physics enable remote keystroke detection through windows, exploring side-channel attacks, signal interpretation, and modern espionage techniques for data extraction.
Dive into the security vulnerabilities of Ecovacs robots, exploring broken encryption, unauthorized camera access, and privacy concerns while learning techniques for privacy-preserving usage and rooting.
Dive into the technical investigation of USPS-themed SMS phishing attacks, exploring vulnerability exploitation, reverse engineering techniques, and methods to combat scammer operations targeting US consumers.
Discover advanced memory forensics techniques to detect and analyze EDR-evading malware, including system call manipulation, module overwriting, and debug register abuse.
Uncover critical AWS vulnerabilities and security insights through real-world examples of shadow resource exploitation, featuring detection methods, privilege escalation techniques, and best practices for cloud security.
Dive into the critical Outlook security vulnerabilities, exploring remote code execution exploits through COM objects, NTLM leaks, and essential mitigation strategies for enterprise protection.
Discover how to build and implement a modular wireless survey system using PacketGlass for efficient collection, visualization, and analysis of massive wireless network data through Elastic-based analytics.
Explore fascinating unsolved codes and ciphers throughout history, from CIA's Kryptos sculpture to mysterious WWII pigeon messages and encrypted postcards from notable figures.
Discover how data science transforms overwhelming security data into actionable insights, helping identify coordinated attacks amid false positives using open-source models and security knowledge encoding.
Get personalized course recommendations, track subjects and courses with reminders, and more.