Shield Security Pro

Shield Security has a free version with basic functionality available on WordPress.org, including a WordPress-specific firewall, login protection, and basic logging. The Pro version adds AI-powered malware scanning, advanced IP blocking with CrowdSec integration, automated file repair, scheduled scanning (up to hourly), two-factor authentication, Security Admin access restriction, unlimited activity logging, contact form SPAM protection, and priority email support. For most WordPress sites requiring comprehensive security, the Pro version is strongly recommended.

silentCAPTCHA uses behavior analysis to identify malicious bots without interrupting legitimate visitors or requiring manual verification. Unlike Google reCAPTCHA and Cloudflare Turnstile which present users with puzzles or checkboxes, silentCAPTCHA works invisibly in the background, resulting in a frictionless user experience. It's also GDPR-compliant because all detection data stays on your WordPress site rather than being sent to external services. This makes it superior for user experience while providing stronger privacy protection.

No, Shield Security Pro is designed to be lightweight and non-invasive. The plugin operates at the WordPress application level, analyzing incoming requests before they reach your site's core processing. Most users report no measurable performance impact. Shield's firewall and bot detection happen before WordPress fully loads, and malware scanning can be scheduled during off-peak hours. If you have concerns, Shield includes a 14-day money-back guarantee allowing you to test it risk-free.

Security Admin is an exclusive Shield Security feature that adds PIN-based authentication to the Shield Security plugin itself. Even if another WordPress administrator gains access to your site, they cannot modify Shield's security settings without knowing the Security Admin PIN. This prevents accidental or malicious tampering with your security configuration by other site admins. It's particularly valuable for multi-admin sites, development agencies managing client sites, and enterprises requiring strict security controls.

Shield Security includes a 14-day money-back guarantee with no questions asked. If you're not satisfied with Shield's performance or functionality, contact their support team within 14 days of purchase and request a refund. Your license will be downgraded and refunded. The guarantee is unconditional, though Shield does offer extensive support and documentation to help you get the most from the plugin before considering a refund.