SiteGuard WP Plugin is a security plugin from EG Secure Solutions Inc. that protects WordPress sites from automated attacks through CAPTCHA challenges and multi-layered login defenses. It focuses on hardening admin and login pages against brute-force attacks and preventing comment spam.

Beyond standard CAPTCHA protection with both hiragana and alphanumeric options for Japanese and international users, the plugin renames login pages to hide default WordPress URLs from attackers, locks out IP addresses after repeated failed login attempts, and includes a fail once mechanism that deliberately rejects the first login attempt to break automated password attacks.

The plugin installs directly through the WordPress admin interface without requiring server-level configuration. All security features are managed through the WordPress dashboard, making protection accessible to site operators without technical expertise. Upon activation, the login page URL is automatically changed to improve security immediately.

The plugin is released under the GPL v2 license and available for free download from WordPress.org for both commercial and non-commercial use. The source code is publicly accessible, allowing security audits and community contributions, though no warranty or official support is included with the free version.

The plugin interface supports both Japanese and English, with language automatically switching based on the WordPress admin dashboard settings.