1. Cloud Incident Response Wiki
  2. Cloud Forensics and Cloud Security

What is a DoS Attack?


A denial-of-service (DoS) attack is a cyberattack that aims to disrupt a website or service by overwhelming it with traffic. This can make the website or service unavailable to legitimate users. DoS attacks can be launched from a single computer or multiple computers (distributed denial-of-service attacks).


There are different types of DoS attacks, including:


Buffer overflow attacks: These attacks exploit vulnerabilities in software to crash a system.


Flood attacks: These attacks overwhelm a system with traffic, such as ping floods or SYN floods.


Amplification attacks: These attacks use compromised systems to amplify the amount of traffic sent to a target.


DoS attacks can be disruptive and costly for businesses. They can cause websites to go offline, damage reputations, and lead to lost revenue.


Here are some of the motivations behind DoS attacks:


Extortion: Attackers may launch DoS attacks to extort money from businesses.


Disruption: Attackers may launch DoS attacks to disrupt a website or service for political or ideological reasons.


Competition: Attackers may launch DoS attacks against competitors to gain an advantage.


Fun: Some attackers launch DoS attacks for fun or notoriety.


How to protect against DoS attacks?


There are a number of things that businesses can do to protect themselves from DoS attacks, including:


Use a web application firewall (WAF): A WAF can help to filter out malicious traffic.


Limit the number of connections that can be made to your website or service.


Use a DDoS mitigation service: A DDoS mitigation service can help to absorb and deflect DDoS attacks.


Educate your employees about DoS attacks: Employees should be aware of the signs of a DoS attack and how to report them.


By taking these steps, businesses can help to protect themselves from the damaging effects of DoS attacks.