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This plugin used to apply/add login captcha field to wordpress login form.
<h4>Features</h4>
<ul>
<li>
Extremely easy to use
</li>
<li>
Secure
</li>
<li>
No Admin Settings.
</li>
</ul>

Login Captcha

This plugin used to apply/add login captcha field to wordpress login form.

greyfu

Greyfu Login Captcha adds a secure verification step to your WordPress login form, helping block automated login attempts and brute-force attacks.
Lite Version (Free): 
* Simple math-based captcha 
* Multisite compatible 
* Lightweight and fast 
* No personal data stored or transmitted 
* Works without any external service
Pro-Ready Features (Optional Upgrade): 
* Infrastructure prepared for reCAPTCHA v2 integration 
* Infrastructure prepared for hCaptcha integration 
* API key fields included
The free version is fully functional on its own and does not require any external captcha service.
<h3>Third Party Services</h3>
This plugin optionally connects to external captcha services when the Pro features are enabled:
Google reCAPTCHA (Optional) 
When reCAPTCHA is enabled in Pro settings, the plugin sends verification requests to Google’s reCAPTCHA service. 
– Service: https://www.google.com/recaptcha/ 
– Privacy Policy: https://policies.google.com/privacy 
– Terms of Service: https://policies.google.com/terms 
– Data sent: User’s IP address and reCAPTCHA response token 
– When: Only during login form submission when reCAPTCHA is enabled
hCaptcha (Optional) 
When hCaptcha is enabled in Pro settings, the plugin sends verification requests to hCaptcha service. 
– Service: https://www.hcaptcha.com/ 
– Privacy Policy: https://www.hcaptcha.com/privacy 
– Terms of Service: https://www.hcaptcha.com/terms 
– Data sent: User’s IP address and hCaptcha response token 
– When: Only during login form submission when hCaptcha is enabled
The free/lite version uses a built-in math captcha that does not connect to any external service.
<h3>Support / Contact</h3>
For issues or questions, please contact us: 
Email: hello@greyfu.com 
Website: https://greyfu.com

Greyfu Login Captcha

A lightweight captcha that protects your WordPress login page from automated bot attacks using a simple math challenge.

Login Captcha vs Greyfu Login Captcha