To avoid reCAPTCHA Enterprise scoring issues, such as receiving a risky score (0.3 or less) for a legitimate user or a low-risk score (greater than 0.7) for a fraudulent user, it is crucial to implement Score-Based Keys according to best practices. Here are some best practices to ensure your implementation of reCAPTCHA Enterprise score-based keys is optimized for the best performance:
- JavaScript Integration: Make sure to use the enterprise.js JavaScript file. It's important to place this script within the <head> </head> element of your web page. Avoid using the 'async' or 'defer' attributes, and place the script as close to the top of the head as possible for the best results.
- Avoid Conflicting Libraries: If you're currently using any third-party libraries like 'ng-recaptcha' for the frontend component of reCAPTCHA Enterprise, it's advisable to remove them. They can interfere with the optimal functioning of reCAPTCHA.
- JavaScript Callback Usage: Implement the 'grecaptcha.enterprise.ready()' callback. This ensures that the reCAPTCHA Enterprise JavaScript is fully loaded before you make any 'grecaptcha.enterprise.execute()' calls. This step is crucial for the system to work correctly.
- Timing of Execute Calls: Aim to perform the 'grecaptcha.enterprise.execute()' call as late as possible during user interactions. The 'grecaptcha.enterprise.execute()' call should never be called on page load. Ideally, this should be one of the last steps before you send the user's data to your backend. This timing helps in capturing the user's interaction more accurately. Additionally, each call should include a descriptive action name to further improve reCAPTCHA's performance.
- Increase Execute Calls: Consider increasing the number of 'grecaptcha.enterprise.execute()' calls within your application. Adding these calls, especially on high-traffic pages and with specific action names, can significantly improve the understanding of your overall traffic by the reCAPTCHA risk model. Remember, these additional 'grecaptcha.enterprise.execute()' calls are just for collecting information; you don't need to assess these tokens.
By following these best practices, you can significantly enhance the performance and accuracy of your reCAPTCHA Enterprise score-based key implementation. These measures will help you avoid common scoring issues and provide a more secure and efficient experience for your users.