What is Email Security?
Learn how to guard against malware and phishing attacks.
Global Threat Landscape Report 2H 2023 Speak with an Expert
Email Security Definition
Email security helps protect an organization’s attack surface from cyber threats that use email account attack vectors such as phishing and spam to gain unauthorized access to the network. By following email security best practices for cybersecurity including email accounts, organizations can reduce the spread of malware, such as ransomware and viruses, to prevent successful cyber attacks.
Email is a critical component of organizational communication because it enables users to communicate quickly, easily, and with a variety of devices. Further, email can be used to send a number of different types of media, and communications can be tracked, stored, and organized according to attributes such as time and date stamps and size.
Email security is important because email contains sensitive information, is used by everyone in the organization, and is therefore one of a company’s largest targets for attacks. The shift to cloud-based email like Gmail and others comes with several benefits, but cloud-based email has become a tempting attack surface for cyber criminals.
How Secure Is Email?
Email is a top threat vector because it is a ubiquitous tool that everyone in an organization uses. It is in an open format that can be read on any device without decryption once it is intercepted.
An email does not go straight to the recipient. Rather, it travels between networks and servers, some vulnerable and unsecured, before landing in an inbox. Even though an individual’s computer may be secure from an attacker, the network or server the email has to travel through may have been compromised.
Also, cyber criminals can easily impersonate a sender or manipulate email content in the form of body copy, attachments, Uniform Resource Locators (URLs), or a sender’s email address. This is fairly straightforward for a hacker attacking an unsecured system because each email has fields that contain metadata detailing information about the email, who it came from, where it is headed, etc. A hacker only needs to access this metadata and change it, and it will look like the email came from someone or someplace it did not.
Types Of Email Attacks
Cyber criminals use many different tactics to hack email, and some methods can cause considerable damage to an organization’s data and/or reputation. Malware, which is malicious software used to harm or manipulate a device or its data, can be placed on a computer using each of the following attacks.
Phishing
A phishing attack targets users by sending them a text, direct message, or email. The attacker pretends to be a trusted individual or institution and then uses their relationship with the target to steal sensitive data like account numbers, credit card details, or login information.
Phishing comes in several forms, such as spear phishing, regular phishing, and whaling. Spear phishing targets a particular person, while a whaler targets someone high up in the organization by pretending to be someone they trust.
Spoofing
Spoofing is a dangerous email threat because it involves fooling the recipient into thinking the email is coming from someone other than the apparent sender. This makes spoofing an effective business email compromise (BEC) tool. The email platform cannot tell a faked email from a real one because it merely reads the metadata—the same data the attacker has changed.
This makes the impersonation of a person the victim either knows or respects relatively easy for an attacker.
Email Security Tactics
These are the top 5 practices for strengthening email security:
- Train staff in cybersecurity awareness
- Use 2-factor authentication
- Improve password management
- Encrypt emails
- Be aware of phishing emails
Email Security FAQs
What is email security?
Email security helps protect an organization’s attack surface from cyber threats that use email account attack vectors
What are the common threats to email security?
The most common forms of email attacks are from phishing and spoofing.
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