How to Prevent WordPress Malware — 10 Security Steps

Most WordPress hacks are preventable. Attackers don't typically target specific websites — they run automated tools scanning millions of sites for known vulnerabilities. Follow these 10 steps and you're protected against 95% of attacks.

1. Keep WordPress Core, Themes, and Plugins Updated

The #1 cause of WordPress hacks is outdated software with known vulnerabilities. Most WordPress hacks exploit vulnerabilities that were patched months or years ago — site owners just hadn't updated. Enable auto-updates for minor WordPress core releases. Update plugins and themes within 48 hours of new releases that contain security fixes.

2. Use Strong Passwords and Change Default Username

Never use "admin" as your WordPress username — it's the first thing brute force tools try. Create a new administrator account with a different username, then delete the "admin" account. Use a 16+ character password with mixed characters. A password manager makes this easy.

3. Install a WordPress Security Plugin

A good security plugin adds multiple protection layers. Recommended options:

• Wordfence — firewall, malware scanner, brute force protection (free tier is solid)
• Sucuri Security — activity auditing, malware scanner, file integrity monitoring
• iThemes Security — login protection, file change detection, brute force prevention

Install one — not all three. Multiple security plugins conflict.

4. Limit Login Attempts

Brute force attacks try thousands of username/password combinations. Limit login attempts so accounts lock after 3–5 failed tries. Wordfence and iThemes Security both include this. If you want a standalone plugin, use "Limit Login Attempts Reloaded".

5. Enable Two-Factor Authentication

Even if your password is compromised, 2FA stops attackers from logging in. Use Google Authenticator or Authy with the "Two Factor Authentication" plugin. This is especially important for admin and editor accounts.

6. Keep Backups — Both Files and Database

Backups aren't prevention, but they're your ultimate safety net. Without a backup, a hack may mean losing your site entirely. Use:

• UpdraftPlus — free, backs up to Google Drive, Dropbox or S3
• Your hosting backup — Hostinger includes daily backups on Business plan and above

The key rule: store backups offsite. A backup on the same server as a hacked site is also compromised.

7. Change the Default WordPress Login URL

By default, WordPress admin is at /wp-admin or /wp-login.php. Automated bots know this and hammer these URLs. Use "WPS Hide Login" plugin to change it to something custom like /your-secret-login. This doesn't stop a determined attacker but eliminates most automated brute force attempts.

8. Disable File Editing in Admin

WordPress allows editing theme and plugin files from the admin dashboard. If an attacker gets admin access, this is a quick way to inject malware. Disable it by adding to wp-config.php:

9. Set Correct File Permissions

Wrong file permissions allow attackers to write to files they shouldn't touch. The correct WordPress permissions:

• Folders: 755
• Files: 644
• wp-config.php: 440 or 400

Fix via FTP or run in terminal: find . -type f -exec chmod 644 {} \; && find . -type d -exec chmod 755 {} \;

10. Use a Web Application Firewall (WAF)

A WAF sits in front of your site and blocks malicious requests before they reach WordPress. Options:

• Cloudflare Free — CDN + basic WAF, stops most common attacks
• Cloudflare Pro — OWASP Core Rule Set, advanced bot protection
• Wordfence Premium — plugin-level WAF with real-time threat intelligence