Protecting WordPress from Ransomware Attacks

Ransomware can encrypt your WordPress files and database, demanding payment for decryption. Prevention and preparation are essential to avoid becoming a victim.

How Ransomware Targets WordPress

Attack Vectors

• Compromised admin credentials
• Vulnerable plugins with remote code execution
• Infected theme files
• Server-level compromise
• Supply chain attacks

What Ransomware Does

• Encrypts files (PHP, images, database)
• Displays ransom demands
• Threatens data publication
• May spread to other sites on server

Prevention Strategies

Backup Strategy (Critical)

• Daily automated backups
• Store backups off-site (not on same server)
• Test backup restoration regularly
• Keep multiple backup generations
• Encrypt backups with separate key

Access Control

// Limit admin access
define('DISALLOW_FILE_EDIT', true);
define('DISALLOW_FILE_MODS', true);

// Restrict PHP execution in uploads
// See upload directory protection guide

Update Management

• Enable automatic security updates
• Monitor vulnerability disclosures
• Remove unused plugins and themes
• Update PHP to supported version

File Integrity Monitoring

Detect Unauthorized Changes

// Basic file monitoring
function wpfs_check_file_integrity() {
    $baseline = get_option('wpfs_file_baseline', array());
    $current = wpfs_scan_core_files();

    $changes = array_diff_assoc($current, $baseline);

    if (!empty($changes)) {
        wpfs_alert_admin('File changes detected', $changes);
    }
}

function wpfs_scan_core_files() {
    $hashes = array();
    $core_files = array(
        ABSPATH . 'wp-config.php',
        ABSPATH . 'wp-settings.php',
        ABSPATH . 'index.php'
    );

    foreach ($core_files as $file) {
        if (file_exists($file)) {
            $hashes[$file] = md5_file($file);
        }
    }

    return $hashes;
}

Network Segmentation

Isolate WordPress

• Separate WordPress from other applications
• Use different database credentials per site
• Limit server account permissions
• Consider containerization (Docker)

User Security

Prevent Credential Theft

• Enforce strong passwords
• Require two-factor authentication
• Train users on phishing
• Audit user accounts regularly

Incident Response Plan

If Ransomware Strikes

1. Disconnect affected systems immediately
2. Do NOT pay the ransom
3. Preserve evidence (logs, encrypted files)
4. Report to authorities
5. Assess scope of encryption
6. Restore from clean backups
7. Investigate entry point
8. Implement additional protections

Recovery Checklist

• Verify backup integrity
• Rebuild server if necessary
• Fresh WordPress installation
• Restore database from backup
• Scan all files before restoring
• Change all credentials
• Verify no persistence mechanisms

Why Not to Pay

• No guarantee of decryption
• Marks you as willing victim for future attacks
• Funds criminal operations
• May be illegal (sanctions)
• Better to restore from backups

Server-Level Protections

• Endpoint detection and response (EDR)
• Regular security patches
• Intrusion detection systems
• Network traffic monitoring

Conclusion

Ransomware protection centers on backups and prevention. Maintain tested, off-site backups that allow recovery without paying ransoms. Combine with access controls, monitoring, and incident response planning.