What is a DDoS Attack?

What is a DDoS Attack?

The acronym “DDoS” stands for Distributed Denial of Service. DDoS is the kind of DOS attack wherein various compromised systems that are usually infected with a Trojan computer virus are used for targeting a solitary system that triggers a Denial of Service attack. The victims of a DDoS attack are comprised of the end targeted system as well as all of the systems that are used and controlled maliciously by a hacker within a distributed attack.

The denial of service attacks are described by the explicit attempt by the attackers so as to prevent legitimate users of the service from using this service. Within the distributed denial of service attack, the incoming traffic flooding the victims initiates from numerous different sources, probably hundreds to thousands or more.

How Do DDoS Attack Work?

On a DDoS attack, the inward traffic that floods the victim originates from many various sources, probably hundreds to thousands or even millions. It successfully makes it very difficult to prevent the attack just through blocking an IP address. It’s very hard to differentiate genuine user traffic from the attack traffic if spread across various points of derivation.

The Variance between DDoS and DoS Attacks

A Denial of Service attack is far different from the DDoS attack. A DoS attack usually uses a computer and internet connection to deluge a besieged resource or system. A DDoS attack makes use of multiple computers as well as internet connections for flooding a targeted resource. The DDoS attacks are usually international attacks which are circulated via botnets.

Forms of DDoS Attacks

There are different forms of DDoS attacks. Typical attacks involve the following:

  • Traffic attacks – the traffic overflowing attacks conduct a big volume of UDP, TCP and the ICPM packets to targets. Legitimate requests may get lost & such attacks might be complemented through malware exploitation.
  • Bandwidth attacks – a DDos attack overloads a target with huge amounts of rubbish data. It results to loss of equipment resources and network bandwidth and it could result to a comprehensive denial of service.
  • Application attacks – the application-layer data posts could deplete the resources within an application layer which leaves the services of a target system unavailable.

A DDoS attack makes use of different techniques for sending numerous junk requests to a site. It results to an increase of the amount of traffic that goes to your website that it becomes overwhelmed, making that almost impossible for anybody to load a page. Websites need to filter out traffic from a bad dam which allows a lot of water to pass through.

But when somebody upstream could send unexpected flood down, the dam would overflow and may even crack, allowing the water over. It floods the entire region underneath, and within our analogy, it drowns the entire website you are attempting to reach. This time, nobody could go there.

The criminal perpetrators of a DoS attack usually targets services or websites hosted on a high profile web server like a credit card payment gateway or banks. Blackmail, revenge and activism could motivate such attacks.