Email Forensics: Investigation Guide
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Therefore, forensic investigators need to have a thorough understanding of an email system and different techniques used by cyber-criminals to conduct email crimes. Email forensics refers to the study of the source and content of emails as evidence to spot the actual sender and recipient of a message, data-time, and intent of the sender.
In this module of the computer forensics investigation series, we will learn various steps involved in the investigation of email crime. We will learn to investigate the meta-data of malicious emails. You will understand port scanning, keyword searching, and analysis of headers in emails. Here, the primary goal for a forensics investigator is to find the person behind the email crime. Hence, he has to investigate the server of the email, network devices, software, and fingerprints of the sender mailer.
Further, we will understand various components involved in email communication. We will learn about mail user agents, mail transfer agents, and various protocols used to send emails.
As we know, an email system works on the basic client-server architecture that allows clients to send and receive emails. An email client software helps the sender to compose the mail. Most of them have a text editor which helps the sender to compose the email for the receiver. Here, while composing emails, malicious people embed malicious scripts and attach malware and viruses which are then sent to people.
The goal of this ebook is not to help you set up an email server rather, we will focus on understanding the basic functionality of the email server. We will understand what components an email system consists of which allows users to send and receive emails. Furthermore, we will dive deeper into the forensics part to investigate and discover evidence. We will understand the investigation procedure for email crimes.
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