9.1 DoS/DDoS Concepts
DDoS Attack Trends
What is a Denial-of-Service Attack?
- Denial of Service (DoS) is an attack on a computer or network that reduces, restricts or prevents accessibility of system resources to its legitimate users.
- In a DoS attack, attackers flood a victim system with non-legitimate service requests or traffic to overload its resources.
- DoS attack leads to unavailability of a particular website and show network performance.
What are Distributed Denial of Service Attacks?
- A distributed denial-of-service (DDoS) attack involves a multitude of compromised systems attacking a single target, thereby causing denial of service for users of the targeted system.
- To launch a DDoS attack, an attacker uses botnets and attacks a single system.
How Distributed Denial of Service Attacks Work