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reCAPTCHA v2 in BotBlocker: An Additional User Verification Method and How to Set Up Keys

To block bots and automate abuse, BotBlocker supports integrating reCAPTCHA v2 as one of the additional methods for verifying users on critical pages. This adds an extra layer of defense, stopping even the most persistent automated scripts.

Why Use reCAPTCHA v2?

  • Detects and blocks suspicious, automated actions with a user-friendly widget (“I’m not a robot”)
  • Effective against most bots and scripts that bypass basic browser and JavaScript checks
  • Can be enabled on user verification pages, login forms, registration, comments, or any place where suspicious traffic is detected

How reCAPTCHA v2 Works in BotBlocker

  • When enabled, reCAPTCHA v2 is shown to users who are subject to additional verification (for example, after suspicious activity is detected)
  • Users must solve the CAPTCHA to proceed—bots and automated tools usually fail this check
  • This greatly reduces the risk of brute force, spam registrations, or scripted abuse

How to Create reCAPTCHA v2 Keys: Step-by-Step

  1. Go to the reCAPTCHA admin console:
    https://www.google.com/recaptcha/admin
  2. Log in with your Google Account.
  3. Register a new site:
    • Label: Enter any name to identify your site
    • Choose “reCAPTCHA v2” (Checkbox or Invisible as needed)
    • Enter your domain(s) (e.g., example.com, without “http://” or “/”)
    • Accept terms and submit
  4. Copy your Site Key and Secret Key:
    • After registration, you will see two codes: Site Key (for front-end) and Secret Key (for back-end)
  5. Add keys to BotBlocker settings:
    • Go to your WordPress admin panel → BotBlocker Integrations→ reCAPTCHA v2
    • Paste both keys into the corresponding fields and save changes
  6. Test the integration:
    • Visit the user verification or login page as a visitor to ensure reCAPTCHA appears and functions correctly

Recommendations for Using reCAPTCHA v2

  • Use reCAPTCHA only on verification, login, or registration pages—not on every page, to avoid annoying real users
  • Update your keys if you change domains or move to production
  • Monitor user feedback to ensure CAPTCHA does not cause usability issues

FAQ

Do I need to pay for reCAPTCHA v2?
No, the standard service is free for most websites.

Will it block real users?
Rarely. reCAPTCHA v2 is designed to be user-friendly, but provide an alternative if users report problems.

Can I use reCAPTCHA v3?
BotBlocker also supports reCAPTCHA v3; choose the version that best fits your needs.

Read more about CAPTCHA in BotBlocker

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