Email Bomb

Definition of Email Bomb

An email bomb refers to a cyber attack that involves sending a massive volume of emails to a particular email address or system. The primary goal of this attack is to overwhelm the recipient’s email system or server, causing it to crash or become unusable. Email bombing can be used as a form of revenge, protest, or harassment against the targeted individual or organization.


The phonetic spelling for “Email Bomb” using the International Phonetic Alphabet (IPA) is: /ˈiːmeɪl bɒm/- Email: /ˈiːmeɪl/- Bomb: /bɒm/

Key Takeaways

  1. An Email Bomb is a type of cyber attack where a perpetrator sends a large number of emails to a specific target, usually with malicious intent.
  2. These attacks can overwhelm email servers, causing them to crash or become ineffective, resulting in a denial of service (DoS) for the targeted individual or organization.
  3. To minimize the risk of an Email Bomb, it’s important to implement robust email security measures, such as email filters, strong passwords, and regular patching of your email infrastructure.

Importance of Email Bomb

The technology term “Email Bomb” is important because it refers to a malicious cyber activity where an attacker sends a massive amount of emails to a single email address, with the primary intention of overwhelming the recipient’s email server or inbox.

This could lead to significant repercussions, such as server crashes, slowed performance, loss of vital data, disruption of communication channels, and potential vulnerability exploitation.

Understanding the concept of an email bomb helps organizations and individuals to implement effective security measures and policies to mitigate the risks posed by such attacks, ensuring the smooth and secure functioning of their communication systems.


An email bomb refers to a specific type of cyber-attack wherein a malicious individual or entity sends a massive volume of email messages, usually to a single email address or a specific target system, with the intention of overwhelming or disrupting its normal function. One of the primary purposes for this kind of attack is to create a denial-of-service (DoS) situation, wherein the inundation of emails renders the targeted email account or system virtually inoperative, preventing legitimate users from accessing their email services.

Email bombs have been known to crash servers, fill up inboxes to maximum capacity, and cause substantial delays in mail delivery. To execute an email bomb, attackers often use automated tools, scripts, or botnets, which massively generate emails at overwhelming rates varying from hundreds to thousands of emails per minute.

In some cases, attackers can create a ripple effect by triggering automatic replies or responses from other systems, growing the volume of emails and magnifying the extent of the disruption. Typically, the perpetrators use email bombs as a form of cyber protest, revenge, or to silence an individual or organization.

On a larger scale, email bombing can serve as a smokescreen for other malicious activities, such as infiltration, data theft, or compromising other systems while IT personnel are preoccupied with the email chaos.

Examples of Email Bomb

An email bomb is a form of cyber attack where a malicious actor sends a massive number of emails to a single recipient or system, with the aim of overwhelming the target’s inbox or crashing their email server. Here are three real-world examples:

In 1996, a Vancouver-based web designer, David de Sola, received a deluge of emails, causing his internet service provider’s mail server to crash. This early example of an email bomb attack was executed with a Perl script that sent 500 emails over five minutes. De Sola was involved in a dispute with an individual who had threatened him with an email bomb.

In 2018, an email bombing campaign targeted numerous ProtonMail accounts belonging to activists and journalists. The attackers used an open-source email bombing tool called “Pbomb” to send a massive volume of emails to the targeted accounts. As a result, the recipients struggled to access their legitimate emails amidst the deluge of spam messages. While the identity of the attackers remained unknown, the campaign highlighted the continued prevalence and potential impact of email bombing.

In 2020, the forum website “” was targeted by a large-scale email bomb attack. This website is known for its interactive community that discusses topics from video games to music and sports. The site was bombarded with so many messages that it caused significant disruptions to its email services and the site’s moderation. Users experienced difficulties in registering for new accounts or receiving email notifications from the website during the attack. Although the attacker’s identity and motive were never revealed, it demonstrates how email bombing can cause disruptions to online platforms and businesses.

Email Bomb FAQ

What is an Email Bomb?

An Email Bomb is a form of cyber attack where a user sends massive amounts of emails to a specific email address or system, overloading the server and causing it to slow down or crash.

Why do people launch Email Bombs?

Email Bombs can be launched for various reasons, including personal grudges, political motives, or as a distraction to hide other cyber attacks. They are often used to cause inconvenience to the target or to achieve some personal gain.

How does an Email Bomb work?

An Email Bomb typically involves multiple automated scripts or bots sending thousands or even millions of emails to the target email address. These emails are sent simultaneously or rapidly over a short period of time, causing the targeted email server to become overwhelmed, leading to slow performance or crashing.

How can I protect myself from an Email Bomb attack?

To protect yourself from an Email Bomb attack, you can use a strong spam filter, set email limits, and monitor your email traffic. Additionally, having a robust email server with ample resources and a backup system can help minimize the effects of an Email Bomb attack.

What should I do if I am a victim of an Email Bomb attack?

If you are a victim of an Email Bomb attack, first, try to identify and block the source of the emails. Then, report the incident to your internet service provider (ISP), as they may be able to provide assistance. Finally, consider implementing additional security measures in your email system or seeking professional help to protect against future attacks.

Related Technology Terms

  • Email Flooding
  • Mailbombing
  • Spamming
  • Denial of Service (DoS) Attack
  • Email Spoofing

Sources for More Information


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