Chances are that if you are reading this book (or are otherwise alive in 2015 or beyond), you have used the Internet for a while. You have an email account that you check regularly, use your smart phones to shop for pizza, clothing, appliances, or maybe even your next date. The Internet has made the world of commerce, social interaction, and entertainment much more available to everyone. The Internet has also made it much easier for criminals to get access to the general public. Just like your grandma, they are gradually becoming more technologically savvy. And just like with grandma, this development has frightening implications. Unfortunately for the general public, technology has also made it much harder to track criminals, as the trail of evidence is no longer hairs and fibers from clothing, but digital records that are often faked or deleted.