Courses from 1000+ universities
AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.
600 Free Google Certifications
Artificial Intelligence
Data Science
Cybersecurity
L'Italiano nel mondo
Introduction to HTML5
Umano Digitale
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Use MySQL Workbench to connect to a managed MySQL cluster, run queries, and handle common administration tasks through a graphical interface.
Install and manually configure a customizable Nextcloud server on Ubuntu, including MariaDB, Apache, PHP, DNS, SSH, and SSL.
A hands-on demonstration of hiding an Apache-based Linux backdoor through a rootkit, command injection, and a Meterpreter reverse shell.
Learn how red-team operators maintain access to Linux targets using SSH keys, privileged accounts, shell configuration, web shells, and cron jobs.
Explains how Linux SUID and sudo misconfigurations can be exploited to obtain root access, alongside kernel-exploit techniques.
Deploy a Django web application on Linode using its marketplace, SSH access, and GitHub-based code updates.
Learn to elevate privileges on Windows by bypassing UAC and using kernel exploits and token impersonation in a red-team target environment.
Learn Windows defense evasion through antivirus detection analysis, PowerShell obfuscation, Shellter payload injection, and practical red-team execution.
Practice querying and modifying an employees database with MySQL’s SELECT, INSERT, UPDATE, and DELETE commands.
Hands-on Windows credential access with Mimikatz, SAM and LSA dumping, token impersonation, and NTLM hash cracking for red team operations.
Learn how red teams maintain Windows access across restarts using Empire persistence modules for registry keys, scheduled tasks, WMI, local accounts, and backdoors.
A practical red-team walkthrough of gaining initial access to a Linux server through its public WordPress application, SSH service, and MySQL database.
Set up Docker on Linode, route containers through domain names with NGINX Proxy Manager, and manage them through Portainer.
Learn passive and active red team reconnaissance with DNS, subdomain, port, vulnerability, directory, and employee-information gathering tools.
Configure Caldera to automate adversary emulation across Windows and Linux using agents, adversary profiles, and MITRE ATT&CK operations.
Get personalized course recommendations, track subjects and courses with reminders, and more.