Accurate file permissions are a critical part of keeping your web hosting environment secure and stable. In Unix-based systems, file permissions control who can read, write, or execute files. When these permissions are configured correctly, they protect your website from unauthorized access, accidental changes, and security vulnerabilities.

Incorrect permissions can expose sensitive data, allow malicious scripts to run, or break essential website functionality. For example, overly permissive settings such as 777 may make files writable by anyone, creating a serious security risk. On the other hand, permissions that are too restrictive can prevent your website, applications, or server processes from working properly.