The Internet is an expansive network of computers, much of which is unprotected against malicious attacks. From the time an email composed to the time it is read, an email travels through this unprotected Internet, exposed to various electronic dangers.
Many users believe that email privacy is inherent and guaranteed, psychologically equating it with postal mail. While email is indeed conventionally secured by a password system, this one layer of protection is generally insufficient to ensure appreciable security.
Businesses are increasingly relying on electronic mail to correspond with clients and colleagues. As more sensitive information is transferred online, the need for email privacy becomes more pressing.