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Enumerating Valid Accounts (Pre-Attack)

  1. Login page
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    1. This doesn’t let us know if the email is valid or not. It’s called synchronized error message. Doesn’t let you which variable (email or password) failed the check.
  2. Forgot Password
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    1. This does let us know that they are not registered making the user invalid
      • The correct way of doing this is a message that says “if it exists an email will be sent.”
  3. Find a link that lets you check for validity without the captchas