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What is a DDOS attack?

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Article SummaryDDoS is short for Distributed Denial of Service.
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DDoS is short for Distributed Denial of Service.

DDoS is a type of DoS attack where multiple compromised systems, which are often infected with a Trojan, are used to target a single system causing a Denial of Service (DoS) attack. Victims of a DDoS attack consist of both the end targeted system and all systems maliciously used and controlled by the hacker in the distributed attack.

How DDoS Attacks Work

According to security experts, in a DDoS attack the incoming traffic flooding the victim originates from many different sources – potentially hundreds of thousands or more. This effectively makes it impossible to stop the attack simply by blocking a single IP address; plus, it is very difficult to distinguish legitimate user traffic from attack traffic when spread across so many points of origin.

The Difference Between DoS and DDoS Attacks

A Denial of Service (DoS) attack is different from a DDoS attack. A DoS attack typically uses one computer and one Internet connection to flood a targeted system or resource. DDoS attacks use multiple computers and Internet connections to flood the targeted resource. DDoS attacks are often global attacks, distributed via botnets.
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