If you use Selenium and Firefox version 52 or higher for running the automated tests and your development site does not use SSL, you will get the following warning when entering passwords on your login page
This connection is not secure. Logins entered here could be compromised
Firefox will also open the URL https://support.mozilla.org/en-US/kb/insecure-password-warning-firefox?as=u&utm_source=inproduct in a new tab which takes the focus away from the page you are testing. It causes currently running Selenium tests to be failed.
You can stop this warning and opening of the new tab by changing the Firefox preference
Selenium code to Create the browser profile & set preference
// Create a Firefox profile FirefoxProfile profile = new FirefoxProfile(); //Set the preference to disable insecure password warning profile.setPreference("security.insecure_field_warning.contextual.enabled", false); //Pass the profile to the FirefoxDriver WebDriver driver = new FirefoxDriver(profile); // Start of test code
from selenium import webdriver # Create a Firefox profile profile = webdriver.FirefoxProfile() # Set the preference to disable insecure password warning profile.set_preference("security.insecure_field_warning.contextual.enabled", false); # Pass the profile to the FirefoxDriver driver = webdriver.Firefox(firefox_profile=profile); # Start of test code