- What is Denial of Service (DoS)?
- In computing, a Denial-of-Service (DoS) attack is an attempt to make a machine or network resource unavailable to its intended users, such as to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet.
- What is Distributed Denial of Service (DDoS)?
- A Distributed Denial-of-Service (DDoS) is where the attack source is more than one–and often thousands of-unique IP addresses.
- A Denial-of-Service (DoS) attack is different from a DDoS attack. The DoS attack typically uses one computer and one Internet connection to flood a targeted system or resource. The DDoS attack uses multiple computers and Internet connections to flood the targeted resource. DDoS attacks are often global attacks, distributed via botnets.