Selenium webdriver: Modifying navigator.webdriver flag to prevent selenium detection

Question

I\'m trying to automate a very basic task in a website using selenium and chrome but somehow the website detects when chrome is driven by selenium and blocks every request.

Answer 1

Before (in browser console window):

> navigator.webdriver
true

Change (in selenium):

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

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

After (in browser console window):

> navigator.webdriver
undefined

This will not work for version ChromeDriver 79.0.3945.16 and above. See the release notes here