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Google reCAPTCHA Enterprise is an advanced bot and fraud detection service that helps protect websites from automated attacks and abuse. Implementing reCAPTCHA Enterprise can significantly improve your website's security and integrity.

Benefits of reCAPTCHA Enterprise

Some key benefits of reCAPTCHA Enterprise include:

• Effective protection against bots, scraping, credential stuffing, fake account creation, and other attacks
• Adaptive risk analysis engine that distinguishes humans from bots
• Score-based system to assess risk levels of traffic
• Integration with multi-factor authentication and other countermeasures
• Detailed analytics into threats and suspicious activities
• Ability to tune the service to your website's specific needs

By leveraging over a decade of experience defending websites, reCAPTCHA Enterprise provides robust protection tailored for enterprises.

Implementing reCAPTCHA Enterprise

To implement reCAPTCHA Enterprise:

1. Create reCAPTCHA keys in the Cloud Console specific to your site. Choose score-based keys.
2. Install the keys in your web app using the reCAPTCHA Enterprise JavaScript API. This allows for collecting user behavior signals.
3. Integrate with your backend to verify reCAPTCHA tokens and create risk assessments.
4. Interpret assessment scores to take appropriate actions, like allowing users with low-risk scores or requiring additional verification for risky traffic.
5. Tune your site-specific model by annotating assessments to improve risk analysis accuracy.

With the JavaScript API handling user interactions and the backend verifying tokens, integrating reCAPTCHA Enterprise is straightforward.

Privacy Considerations

Critical considerations for Google reCAPTCHA Enterprise's privacy protection and GDPR compliance:

1. Data processing: reCAPTCHA Enterprise commits to only processing customer data according to instructions, as outlined in Google's Data Processing Addendum and reCAPTCHA Enterprise Service Specific Terms.
2. Data collected: Only hardware, software, and risk analysis data are collected. It is not used for personalized advertising or other purposes.
3. Security measures: Google takes measures to protect customer data, as described in its Security White Paper.
4. GDPR compliance: Google states reCAPTCHA Enterprise can assist customers in complying with GDPR requirements related to processing personal data. However, Wide Angle Analytics note using reCAPTCHA may still pose GDPR issues even with consent.
5. Transparency: reCAPTCHA Enterprise provides visibility into what data is used for risk assessments. However, Arkose Labs note it lacks analytics and data insights compared to alternatives.
6. Consent requirements: Sources disagree on whether reCAPTCHA Enterprise requires user consent under GDPR. Google says it does not, but FreePrivacyPolicy and Wide Angle Analytics argue consent is still required due to data collection.

In summary, while Google claims that reCAPTCHA Enterprise assists with GDPR compliance, there are still open questions about data collection, consent requirements, and transparency. Implementing reCAPTCHA Enterprise requires thoughtful privacy and compliance planning to bridge potential gaps. Comparing alternative CAPTCHA services more aligned with “privacy by design” principles may also be prudent.

https://cloud.google.com/recaptcha-enterprise/docs/faq

So, What About reCAPTCHA v2 and V3 and GDPR Compatibility

There is no clear consensus on which reCAPTCHA version is most compatible with GDPR between v2, v3, and Enterprise. Here is a summary:

reCAPTCHA v2:
– Collects more user data than necessary, posing GDPR compliance issues related to data minimization and purpose limitation principles.
– Requires consent under GDPR, which undermines its effectiveness for spam protection.

reCAPTCHA v3:
– Arguably, it improves privacy compliance by eliminating user challenges but still collects user data and lacks transparency.
– Consent requirements remain unclear.

reCAPTCHA Enterprise:
– Google claims it assists with GDPR compliance, but experts note open questions about consent requirements and data collection.

Based on the unclear and conflicting guidance, there is no definitive recommendation on which reCAPTCHA version is most GDPR compliant. Organizations should carefully assess their specific use case, risk tolerance, and legal obligations when deciding which version to implement, if any.

GDPR Compliant CAPTCHA Services

Some popular GDPR-compliant CAPTCHA services:

1. captcha.eu – A European CAPTCHA service that does not use tracking cookies or store personal data. It claims to be fully GDPR compliant.
2. Friendly Captcha – An alternative to Google reCAPTCHA designed for GDPR compliance. It uses cryptography instead of tracking users or storing personal data.
3. MTCaptcha – Claims its captcha plugin and admin portal are GDPR compliant. It does not record personally identifiable information and encrypts logs.

The key aspects that make these CAPTCHA services more GDPR compliant are:

• Not using tracking cookies or pixels
• Not storing or processing personal identifiable information
• Encrypting any logs or data
• Operating entirely within the EU with no data transfers outside
• Offering transparency into data practices

https://cloud.google.com/security/products/recaptcha-enterprise