Securing WordPress for Government Websites

Government websites are high-value targets for attackers and must meet strict security and compliance requirements. WordPress powers many government sites at local, state, and federal levels. Proper security configuration is essential for protecting public data and maintaining citizen trust.

Compliance Requirements

Key Standards

• FISMA - Federal Information Security Management Act
• FedRAMP - Federal Risk and Authorization Management
• Section 508 - Accessibility requirements
• NIST 800-53 - Security and privacy controls
• CISA Guidelines - Cybersecurity directives

Infrastructure Security

Hosting Requirements

// Check hosting compliance
function verify_government_hosting() {
    $requirements = array(
        'https_enforced' => is_ssl(),
        'us_based_hosting' => check_server_location(),
        'backup_encryption' => verify_backup_encryption(),
        'access_logging' => verify_access_logs()
    );

    foreach ($requirements as $req => $status) {
        if (!$status) {
            error_log("Government hosting requirement failed: {$req}");
        }
    }

    return !in_array(false, $requirements);
}

Network Security

• Web Application Firewall (WAF) required
• DDoS protection mandatory
• CDN with security features
• IP whitelisting for admin access

Access Control

Multi-Factor Authentication

// Require MFA for all government users
function government_mfa_requirement($user) {
    if (is_wp_error($user)) {
        return $user;
    }

    // Check if user has MFA configured
    $mfa_enabled = get_user_meta($user->ID, 'mfa_enabled', true);

    if (!$mfa_enabled && user_requires_mfa($user)) {
        // Redirect to MFA setup
        wp_redirect(admin_url('profile.php?mfa_required=1'));
        exit;
    }

    return $user;
}
add_filter('wp_authenticate_user', 'government_mfa_requirement');

PIV/CAC Card Integration

Many government sites require smart card authentication:

// PIV card authentication
function piv_card_authentication() {
    // Check for client certificate
    if (!isset($_SERVER['SSL_CLIENT_CERT'])) {
        return false;
    }

    $cert = openssl_x509_parse($_SERVER['SSL_CLIENT_CERT']);

    if (!$cert) {
        return false;
    }

    // Validate against government CA
    $valid = verify_government_ca($cert);

    if ($valid) {
        // Extract user info from certificate
        $email = extract_email_from_cert($cert);
        return get_user_by('email', $email);
    }

    return false;
}

Security Hardening

Security Headers

// Government-grade security headers
function government_security_headers() {
    header('Strict-Transport-Security: max-age=31536000; includeSubDomains; preload');
    header('Content-Security-Policy: default-src \'self\'; script-src \'self\'; style-src \'self\'; img-src \'self\'; frame-ancestors \'none\';');
    header('X-Content-Type-Options: nosniff');
    header('X-Frame-Options: DENY');
    header('X-XSS-Protection: 1; mode=block');
    header('Referrer-Policy: strict-origin-when-cross-origin');
    header('Permissions-Policy: geolocation=(), microphone=(), camera=()');
}
add_action('send_headers', 'government_security_headers');

File System Hardening

// Disable file editing
define('DISALLOW_FILE_EDIT', true);
define('DISALLOW_FILE_MODS', true);

// Restrict uploads
function government_upload_restrictions($file) {
    $allowed_types = array(
        'application/pdf',
        'image/jpeg',
        'image/png',
        'application/msword',
        'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
    );

    if (!in_array($file['type'], $allowed_types)) {
        $file['error'] = 'This file type is not permitted for government sites.';
    }

    return $file;
}
add_filter('wp_handle_upload_prefilter', 'government_upload_restrictions');

Audit Logging

// Comprehensive audit logging
function government_audit_log($action, $details = array()) {
    global $wpdb;

    $log_data = array(
        'timestamp' => current_time('mysql'),
        'user_id' => get_current_user_id(),
        'action' => sanitize_text_field($action),
        'ip_address' => wpfs_get_client_ip(),
        'user_agent' => sanitize_text_field($_SERVER['HTTP_USER_AGENT']),
        'details' => wp_json_encode($details),
        'session_id' => session_id()
    );

    $wpdb->insert($wpdb->prefix . 'security_audit_log', $log_data);

    // Also send to SIEM if configured
    if (defined('SIEM_ENDPOINT') && SIEM_ENDPOINT) {
        send_to_siem($log_data);
    }
}

// Log all admin actions
add_action('admin_init', function() {
    government_audit_log('admin_access', array(
        'page' => $_SERVER['REQUEST_URI']
    ));
});

Incident Response

• Documented incident response plan
• 24/7 monitoring capability
• CISA notification procedures
• Regular incident drills

Conclusion

Government WordPress sites require comprehensive security controls, strict compliance adherence, and continuous monitoring. Implement defense-in-depth strategies and maintain detailed audit trails for all activities.