Computer systems are vulnerable to cyber attacks and hackers. The intention of these criminals is to gain possession of confidential information that the criminal can use to his advantage. It's also easier to accidentally send an email to the wrong parties the message wasn't intended for. This could allow private information, such as a plan to purchase a failing company, to get into the hands of the information and use it to outbid the original company. People are also more likely to return a misdelivered letter as unread, then as unread