A search on GitHub reveals several repositories that serve as "checkers" or "validators." Note that many of these are frequently taken down for violating GitHub's terms of service regarding malicious tools.
: Scripts often use tools like Selenium or Playwright to open a "headless" browser, input credentials, and check for a successful login message. Netflix Account Checker Github
: A terminal-based script that uses Selenium-Webdriver to automate the login process on Linux and Windows. A search on GitHub reveals several repositories that