Email has become an integral part of most of our lives.
For many of us, it may be the most common way we communicate with others.
Long gone are the days when email was simple text transactions between two users
looking at black and white terminals. Today's users expect crisp fonts, colors,
inline images, background patterns, HTML and other browser specific formatting as well as
the ability to attach moderately sized files to their messages. The evolution of email
technology that allows all of these new features has greatly enhanced the experience
of email users, but has brought along with it some very common and serious security
concerns. Email has historically been the most common method for attackers to get
malicious code to unsuspecting users, and while many new and creative tactics are
being employed, this method is still frequently use to propagate malicious code.