Shell quest
You’ve been handed a read-only copy of a server after a security alert. Use real Linux commands to look around, read the logs and find five flags. Every game builds a new server, and nothing here runs on a real machine.
Practice for defenders. This lab trains the skills SOC analysts, incident responders and sysadmins use to protect systems. Everything runs in your browser. The companies, people, data and IP addresses are made up, and nothing here touches a real system. Only use security skills on systems you own or have written permission to test.