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denial of service attack
(redirected from DDOS)

   Also found in: Acronyms 0.01 sec.
denial of service attack
An assault on a network that floods it with so many additional requests that regular traffic is either slowed or completely interrupted. Unlike a virus or worm, which can cause severe damage to databases, a denial of service attack interrupts network service for some period. A distributed denial of service (DDOS) attack uses multiple computers throughout the network that it has previously infected. The computers act as "zombies" and work together to send out bogus messages, thereby increasing the amount of phony traffic. See smurf attack, SYN flood attack, land attack, teardrop attack and Ping of Death.

Hackers Caused a Denial of Service
Computers with high-speed connections to the Internet were hacked and planted with illicit programs that, when activated, sent out an unending number of requests and caused a denial of service at Yahoo!, eBay, Amazon.com and other Web sites during the second week of February 2000. (Article headline courtesy of the Philadelphia Inquirer.)


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Both DoS and DDoS are a huge threat to the operation of Internet sites, but the DDoS [2,3] problem is more complex and harder to solve.
com (Staff) Although last week's distributed denial-of-service attack on garnered lots of headlines, analysts at Arbor Networks say that the attack was a relatively small operation that paled in comparison to big DDoS attacks that occur every day.
A pro-Georgian blogger has been identified as the target of the DDoS attacks believed to be an attempt to silence his online criticism of Moscow s role in last year s Georgia-Russia war.
 
 
 
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