denial of service attack

(redirected from Distributed Denial of Service Attack)
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denial of service attack

An assault on a network that floods it with so many 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.

Distributed Attack
A distributed denial of service (DDOS) attack can employ hundreds or even thousands of computers that have been previously infected. The computers act as a network of "zombies" working together to send out bogus messages, thereby creating huge volumes of phony traffic.

In 2016, the Dyn DNS system was hammered by a DDOS attack that caused sporadic slowdowns of major sites such as Twitter, Netflix and The New York Times. The zombie traffic reached more than 100 gigabytes per second of bogus messages. See botnet, smurf attack, SYN flood attack, land attack, teardrop attack and Ping of Death.


It's Not a New Phenomenon
In February 2000, computers were activated that had been previously hacked and planted with illicit programs. The unending number of requests caused a denial of service at Yahoo, eBay, Amazon.com and other websites. (Article headline courtesy of the Philadelphia Inquirer.)
References in periodicals archive ?
In addition to devices malfunctioning or being used for a distributed denial of service attack, and information being stolen, those with cameras or sound monitors could be used for ambient listening, which allows a hacker to hear or see what is going on in the house.
DISTRIBUTED DENIAL OF SERVICE ATTACK PREVENTION AND TREATMENT STRATEGIES
He faces five charges, including conspiring to carry out a distributed denial of service attack on the police agency.
On Thursday WikiLeaks activists instructed their followers to mount a distributed denial of service attack on PayPal and Amazon.
The Internet cables used in a distributed denial of service attack against South Korean government institutions and private businesses in July were traced to North Korea's postal service.
"A small percentage of Blogger users have experienced error messages this afternoon as the result of what appears to be an ongoing distributed denial of service attack aimed at multiple services across the web," a Google spokesman said via e-mail.
<p>Such network load and performance tests "do not get to the true nature of a massive distributed denial of service attack," which can come from anywhere, Armentrout said.<p>The Parabon Blitz service got its first public airing at the Department of Defense's Defense Information Systems Agency (DISA) Customer Partnership Conference in Anaheim, last week.
A message sent by internet blackmailers responsible for a distributed denial of service attack on online bookies Blue Square and Capital Sports
Hidden inside the worm is a clock, ticking down until early May when it is designed to launch a distributed denial of service attack against three websites with an educational focus--www.educ.ch, is designed to launch a distributed denial of service attack against three websites with an educational focus--www.educ.ch, www.medinfo.ufl.edu and www.nibis.de--based in Switzerland, USA, and Germany Two earlier spreading variants of Netsky (Netsky-X and Netsky-Y) have also scheduled attacks against the same websites, but these are programmed to cease at the end of April.
A spokesperson for Keynote Systems Inc, which tracks the performance of web site performance, said Level 3 had told it a hardware problem was to blame, but rumors were flying last night about a distributed denial of service attack.
A large-scale distributed denial of service attack, or DDoS, can cause major Internet disruptions.
In addition to Encryption as a Service, Zayo offers DDoS mitigation, which provides filtering and redirection in case of a distributed denial of service attack.

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