Short for Distributed Denial of Service, it
is an attack where multiple compromised systems (which are usually 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.
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Understanding and Preventing DDoS Attacks No server, no matter how well it's protected, can be expected to stand up to an attack made by thousands of machines. Indeed, Arbor Networks, a leading anti-DDoS company, reports DDoS zombie armies of up to 50,000 systems. Fortunately, major DDoS attacks are difficult to launch; unfortunately, minor DDoS attacks are easy to create.
