There's an email in your inbox from someone you know. The sender asks you for sensitive information and you send it without any hesitation because you trust them. Shortly after, you realize that the information has been exposed or used to compromise an account.
You reach out to the sender only to realize they never requested such information from you. You have just been a victim of an impersonation attack. To avoid the above scenario, learn how an impersonation attack works, its various types, and how to prevent it.