CageFS (Cage File System) is a virtualized file system and a security feature used in web hosting environments. It is used to encapsulate each user's file system, creating a virtual environment that is isolated from other users on the same server. This helps to improve security by preventing users from accessing files and directories outside of their own environment.
CageFS works by creating a "cage" around each user's account, restricting them to their own home directory and preventing them from accessing other users' files or system files. It also restricts access to certain system commands and utilities to prevent users from executing malicious code.
CageFS is commonly used in conjunction with other web hosting control panels and security software to provide additional layers of protection and isolation for web hosting environments.