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LESSON 9 – E-MAIL SECURITY
Table of Contents
“License for Use” Information............................................................................................................... 2
Contributors..............................................................................................................................................4
9.0 Introduction........................................................................................................................................5
9.1 How E-mail Works..............................................................................................................................6
9.1.1 E-mail Accounts.........................................................................................................................6
9.1.2 POP and SMTP............................................................................................................................6
9.1.3 Web Mail.....................................................................................................................................7
9.2 Safe E-mail Usage Part 1: Receiving...............................................................................................9
9.2.1 Spam, Phishing and Fraud........................................................................................................9
9.2.2 HTML E-Mail ................................................................................................................................9
9.2.3 Attachment Security..................................................................................................................9
9.2.4 Forged headers........................................................................................................................10
9.3 Safe E-mail Usage Part 2: Sending................................................................................................ 12
9.3.1 Digital Certificates...................................................................................................................12
9.3.2 Digital Signatures......................................................................................................................13
9.3.3 Getting a certificate................................................................................................................14
9.3.4 Encryption.................................................................................................................................14
9.3.5 How does it work?....................................................................................................................14
9.3.6 Decryption................................................................................................................................15
9.3.7 Is Encryption Unbreakable?....................................................................................................15
9.4 Connection Security.......................................................................................................................16
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