外掛標籤: 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.
