Email security: 7 biggest threats

Threat Simulation

Email security: 7 biggest threats

Email security is one of the most important step that you should stop attackers to compromise your company! For effective email security protection, companies must be aware of the 7 biggest threats to avoid cyber attacks. In order to avoid these threats, and guarantee email security, learn these 7 threats: Domain Squatting, Client-Side Attacks, Malicious Attachments, Ransomware Attacks, Misconfiguration, Browser Exploits, File Format Exploits

1.Domain Squatting (Cybersquatting)

Domain squatting is registering, selling or using a domain name with the intent of profiting from someone else’s trademark. Either companies or their customers can be victims of cybersquatting and target-oriented spear phishing attacks. Hence, email security can be under risk!

2. Client-Side Attacks

These are attacks target vulnerabilities in client applications that interact with a malicious server or data. In client-side attacks, the client launch attack action. This includes attack vectors such as internet browsers, media players, adobe, java etc. client-side tools for Internet users.

3. Malicious Attachments

Cyber criminals attach files to emails. Hence, malware capable of destroying data and stealing information also infects systems. Some of these malware can allow criminals to take control of the user’s computer. Because, they give them access to the screen and ability to capture keystrokes, and access other network systems. Cyber criminals use basic social engineering principles to send these malicious emails. They simply convince users to believe they make legitimate communication.

4. Ransomware

Ransomware is a type of malware that prevents users to enter their system. Therefore, without a ransom is paid, cyber criminals either lock the system’s screen or the users’ files. Ransomware is a sort of data kidnapping software.  Unlike other types of attacks, the aim of ransomware attacks is financial.

5. Misconfiguration

Web servers and applications that have been misconfigured probably leads to many problems:

  • Standard relay
  • Sender address using literal domain address (of localhost)
  • Mail Bombing
  • Sender’s domain is localhost
  • Sender address without the domain (a local user)
  • Sender address uses local hostname and recipient uses percent hack
  • Recipient address uses UUCP-like destination (“bang path”)
  • The sender address is null (like from Mailer-Daemon)
  • Sender address uses local hostname

6. Browser Exploits

A browser exploit (or browser hijacking; a drive-by download) is a form of malicious code. It takes advantage of either flaw or vulnerability in an operating system. Moreover,  it possibly takes advantage of a piece of software with the intent to alter your browser settings without your knowledge.[2] Also, It sometimes contains a link or an abused piece of code.

7. File Format Exploits

File format exploits have been one of the primary information security threats for many enterprises. Attackers exploiting these vulnerabilities create carefully crafted malicious files as a result. These files trigger flaws (such as buffer overflows) in applications. The vulnerabilities are substantially alarming, because, they often cross platforms. For example, a file format vulnerability in Adobe Acrobat might allow an attacker to create a single malicious PDF file that compromises Windows, Macintosh and Linux systems [3]

Solution: Keepnet Labs’ Email Threat Simulator (ETS) for Email Security

Security devices are services. Therefore, they require regular checks and maintenance beyond being plug and run. Furthermore, they must be regularly tested and improved against the popular risks.

You can use Keepnet’s Email Threat Simulator service to test your email service and its components (Antispam, Antivirus, APT Products) against the Cybercriminals risks to see the above-mentioned big picture.


Threat Simulation

Picture 1. Keepnet Labs Email Threat Simulator Workflow

Keepnet Labs Email Threat Simulator does not operate by involving with the traffic between client and server. Security audits carried out by intervening with traffic are insufficient for Antispam, Antivirus and Email services. Hence, Keepnet Email Threat Simulator service provides to conduct real-world cyber security risks .

Keepnet Labs Email Threat Simulator offers some unique methods:

  • It checks incorrect configuration options.
  • Systems that test active network devices by moving traffic, are insufficient. So, this lack is sustained by real attack vectors by Keepnet Labs.
  • It reports about intrusions with domain squatting features as well as its integrated cyber intelligence services.

There are full integration options for organizations that have shut down services such as Pop3 and Imap to the outside world and offer web-based email access to their users. Hence,  to connect to the test email box,  the integration with “Outlook Web Access” option is the right solution.

Register and try Keepnet Labs Email Threat Simulator for free on





Share this post