Braintree's Basic Fraud Tools are a set of customizable rules that allow you to protect your account against carding attacks or other fraudulent activity. They are available at no extra cost to all merchants, regardless of size or processing volume, and do not require any developer work to set up.
Basic Fraud Tools are not enabled on your account by default. To enable them, you’ll need to set up AVS, CVV, and/or risk threshold rules individually. From there, you can adjust your settings any time and even override fraud rejections for certain transactions all within the Control Panel.