WordPress Security
WordPress File Permissions & Integrity
Loose file permissions turn minor vulnerabilities into full takeovers: world-writable files let one flaw rewrite the whole site. Correct ownership, tight permissions, disabled editors, and integrity monitoring keep WordPress code tamper-evident and contained.
Key points
- Set folders 755, files 644, wp-config.php 600; never 777 anything.
- Ensure files are owned by the account user, not the webserver user, where possible.
- Disable theme/plugin editors via DISALLOW_FILE_EDIT.
- Restrict wp-config.php and .htaccess from direct web access.
- Monitor core file checksums and alert on unexpected modifications.
- Lock uploads directories against PHP execution.
- Review permission drift after migrations and restores.
- Separate SFTP credentials per site with directory jails.
Field note
Ownership matters as much as octets: files owned by the account user with 644 beat files owned by the webserver user every time, because a compromised PHP process then can't rewrite its own code.
Frequently asked questions
Why does 777 keep appearing?
Sloppy installers and bad tutorials. It is never required for normal WordPress operation.
Will tight permissions break updates?
One-click updates need write access paths configured correctly, set ownership right once and updates work securely.
How do you detect tampered files?
Checksum monitoring against wordpress.org plus change alerts on write events.
What about the uploads folder?
Writable by design, so it gets no-execute rules plus malware scanning.
How Kinetikatech helps with wordpress security
Honestly, most teams come to us after trying it themselves first: Hardening, malware cleanup, and ongoing protection for WordPress sites, plugins, themes, logins, and file integrity. Our WordPress Security and Website Maintenance service exists so you don't have to learn wordpress security the hard way, we handle the setup, the watching, and the 3 a.m. surprises.