What is a DDoS (Distributed Denial of Service) Attack?

What is a DDoS (Distributed Denial of Service)  Attack?


A Distributed Denial of Service (DDoS) attack is an effort to form a web service unavailable by overwhelming it with traffic from multiple sources.
DDoS attack is one among the foremost powerful weapons on the web.
Once you hear a few website being “brought down by hackers,” it generally means it's become a victim of a DDoS attack. 

In short, this suggests that hackers have attempted to form an internet site or computer unavailable by flooding or crashing the web site with an excessive amount of traffic.

What are distributed denial-of-service attacks (DDoS)?

Distributed denial-of-service attacks
target websites and online services.
The main aim of attackers is to drive with more traffic than the server or network can bear.
The goal is to render the web site or service inoperable.
The traffic can contains incoming messages, requests for connections, or fake packets. 

This may be combined with an extortion threat of a more devastating attack unless the corporate pays a cryptocurrency ransom. 

How DDoS attacks work?

In a typical DDoS attack, the assailant begins by exploiting a vulnerability in one computing system and making it the DDoS master.
The attackers somehow gains some information about their systems and gains control over them by infecting with malware or viruses or bypassing the authenticating controls like gaining the default password on a widely used system or device).
A computer or networked device under the control of an intruder is understood as a zombie, or bot.
The attacker creates what's called a command-and-control server to command the network of bots, also called a botnet. 

The person on top of things of a botnet is usually mentioned because the botmaster (that term has also historically been wont to ask the primary system "recruited" into a botnet because it's wont to control the spread and activity of other systems within the botnet).

Network connections on the web contains different layers of the Open Systems Interconnection (OS) model.
Different types of DDoS attacks specialize in particular layers. 

A few examples:
  • Layer 3, the Network layer. Attacks are referred to as Smurf Attacks, ICMP Floods, and IP/ICMP Fragmentation.
  • Layer 4, the Transport layer. Which is include SYN, UDP Floods and TCP Connection Exhaustion.
  • Layer 7, the appliance layer. Mainly, HTTP-encrypted attacks.
  • what's the Difference Between DoS and DDoS Attacks?


(DoS) and (DDoS) attacks are very similar.
The sole difference between them is their scale.
Single DoS attacks are being conducted with only one source but the DDoS (distributed) attacks often comes from multiple locations.

Well whether it is a DoS or DDoS(Distributed) attack, the attacker may uses one or more computers.
DoS attacks are on the lower end of that spectrum while DDoS attacks are on the upper end.
In the case of Very large DDoS attacks, attackers can span hundreds or thousands of systems.
The proliferation of DoS/DDoS attacks are directly attributed to the proliferation of DDoS-for-hire services market, also referred to as Booter Services.

Can DDoS Attacks Steal Information?

DDoS attacks cannot steal website visitors information.
The sole purpose of a DDoS attack is to overload the web site resources. However, DDoS attacks are often used as how of extortion and blackmailing. 
For example, website owners are often asked to pay a ransom for attackers to prevent a DDoS attack.

What Are the Signs of a DDoS Attack?

The signs of DDoS attacks include:
  • The website is responding slowly.
  • The website is unresponsive.
  • The user has problems accessing the web site .
  • Internet connection issues if you're a target.

Types of Attacks:

DDoS attacks are available many various forms, from Smurfs to Teardrops, to Pings of Death.


Four common categories of attacks:


TCP Connection Attacks:

These plan to spend all the available connections to infrastructure devices like load-balancers, firewalls and application servers.
Even devices capable of maintaining state on many connections are often taken down by these attacks.

Volumetric Attacks:

These plan to consume the bandwidth either within the target network/service, or between the target network/service and therefore the remainder of the web.
These attacks are simply about causing congestion.

Fragmentation Attacks:

They send a flood of TCP or UDP fragments to a use who is victim of it, overwhelming the victim's ability to re-assemble the streams.

Application Attacks:

These plan to overwhelm a selected aspect of an application or service and may be effective even with only a few attacking machines generating a very low traffic rate (making them difficult to detect and mitigate).

What is a DDoS (Distributed Denial of Service) Attack? What is a DDoS (Distributed Denial of Service)  Attack? Reviewed by Tech Wala Dost on May 11, 2020 Rating: 5

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