What is Denial of Service (DoS)

In this article, let us discuss yet another cyber threat Denial of Service (DoS) and DDoS Distributed Denial of Service) Attack.

Denial of Service (DoS)

Denial of Service (DoS) is a type of cyber threat in which the attacker targets a system, usually web server  or a network resources by flooding excessive request to the target. Thus, legitimate users are prevented from accessing the particular system, services or resources.

The main motive behind this attack is to disrupt the services rendered by any web server to the legitimate client. As a result, the legitimate users are temporarily deprived of accessing the services, emails, resources or making the request-response activity between the client and server very time-consuming. Sometimes, continuous flooding of requests may tempt the victim to crash, thereby indefinitely disrupting the service to the client.

Denial of Service attack accomplishes its job by flooding the target victim with superfluous traffic.

DoS often target web servers of reputed corporate networks such as commerce, banking, govt organization etc.

Such type of attacks generally don’t steal or destroy any information, but the victim web server will be unable to render good service to its client, failing to respond to clients requests in time. That badly affects the services like payment gateways, e-commerce sites. Finally, the company has to bear the business and also loses the faith of its legitimate client.

Types of DoS Attack

There are many types of DOS attack:

  • Smurf Attack
  • Ping of Death
  • Buffer Overflow
  • Teardrop
  • SYN Attack

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