How does recaptcha 3 know I’m using selenium+chromedriver?

真的滿厲害的，可以檢查的出來用戶端使用了 chromedriver。

測試用網址：
https://recaptcha-demo.appspot.com/

有沒有使用(success) chromedriver 還有得分(score) 都可以在上面的網址看到結果。

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相關討論：

• How does recaptcha 3 know I’m using selenium/chromedriver?
  https://stackoverflow.com/questions/55501524/how-does-recaptcha-3-know-im-using-selenium-chromedriver
• Selenium webdriver: Modifying navigator.webdriver flag to prevent selenium detection
  https://stackoverflow.com/questions/53039551/selenium-webdriver-modifying-navigator-webdriver-flag-to-prevent-selenium-detec/

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解法：

Before (in browser console window):

> navigator.webdriver
true

Change (in selenium):

// C#
var options = new ChromeOptions();
options.AddExcludedArguments(new List<string>() { "enable-automation" });

// Python
options.add_experimental_option("excludeSwitches", ['enable-automation'])

After (in browser console window):

> navigator.webdriver
undefined