What best describes the security threat of spoofing?

What best describes the security threat of spoofing?

  • sending bulk email to individuals, lists, or domains with the intention to prevent users from accessing email
  • intercepting traffic between two hosts or inserting false information into traffic between two hosts
  • making data appear to come from a source that is not the actual source
  • sending abnormally large amounts of data to a remote server to prevent user access to the server services