插件标签： form security
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Contact Form 7 Spam Killer
"Contact Form 7 Spam Killer" is a advance spam blocker that will help to prevent unwanted spam for your Contact Form 7 plugin.
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IP Limit Add-On for Gravity Forms
This Add-one is useful for spam prevention, you can set a limit to the Gravity Forms submissions by visitor's IP address over a custom time range.
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BWG CF Turnstile
Add Cloudflare Turnstile protection to your Gravity Forms to prevent spam and bot submissions.
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Authyo OTP for Contact Form 7
Adds OTP verification (Email, SMS, WhatsApp, Voice Call) to Contact Form 7 with a per-form redirect option after successful submission.
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ZigZag Image Captcha for Contact Form 7
Adds a secure, flexible image captcha field to Contact Form 7 with zig-zag protection, timer, refresh, AJAX validation, and accessibility support.
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Valid Email Verification for Contact Form 7
Adds duplicate email blocking and verification to Contact Form 7 to improve form security and reduce spam.
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Mathematical Captcha Applier
Apply a simple mathematical captcha to specific buttons by providing their CSS class or ID to prevent spamming.
