Hands-On Cybersecurity for Finance by Erdal Ozkaya
Author:Erdal Ozkaya
Language: eng
Format: epub
Tags: COM053000 - COMPUTERS / Security / General, COM088000 - COMPUTERS / System Administration / General, COM060040 - COMPUTERS / Security / Online Safety and Privacy
Publisher: Packt Publishing
Published: 2019-02-05T06:03:33+00:00
Simple Mail Transfer Protocol
Simple Mail Transfer Protocol (SMTP) is used for email purposes by many organizations. This protocol was added to the internet and it quickly became the simplest way for people and organizations to send and receive emails. However, there has been an explosion of threats targeting the SMTP protocol that many organizations use. Since SMTP wasn't conceived with these security issues in mind, it has become the burden of network administrators to secure it. One of the ways that SMTP is attacked is account enumeration. This is normally done by spammers and phishers when harvesting emails. Account enumeration verifies whether an email account is registered on a certain server by running an SMTP command called VRFY on port 25. The response obtained shows whether or not the email is valid.
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Cryptography | Encryption |
Hacking | Network Security |
Privacy & Online Safety | Security Certifications |
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