Having followed the steps in Parts 1, 2, and 3 of this series, you have now traced an email back to a physical address. The investigation is almost complete. This post explores the final steps in tracing the email to a particular sender. 

IP Addresses are the key to tracing e-mails. But, what is an IP Address? This blog post provides the basics for understanding how IP Addresses work. 

Email evidence is everywhere…but can we trust it? These blog posts explore how to identify the true sender of an email.