In a DDoS attack, multiple servers send simultaneous requests to the target's Web servers, ultimately causing them to crash.
In a DDoS attack, computers flood a website with requests, overwhelming its servers and causing it to crash or become inaccessible for many users.
The last video revealed further divisions within the hacktivist group, announcing that some members of the group still planned to carry out a DDoS attack on NYSE.com.
The closest equivalent to a DDOS attack in the offline world would be a mass sit-in or a mob milling around a building, making entry and exit impossible.
Last year PayPal was able to track down around 1, 000 IP addresses of people who had participated in a DDoS attack on its site because they had used the old LOIC.
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Last year, when a Web site launched by infamous hacker group LulzSec was knocked offline by a massive DDoS attack it turned to CloudFlare, a 30-person San Franicisco start-up for protection.
The DDoS attack directed at servers run by Spamhaus came at a rate of 300 gigabits a second, which is five or six times the intensity of typical cyberattacks against banks, said Dan Holden, director of security research at Arbor Networks Inc.
Spamhaus servers were hit with a huge amount of data via an attack technique known as a Distributed Denial of Service (DDoS) attack.
It appears the site suffered from a Distributed Denial of Service (DDoS) attack over the course of Tuesday and Wednesday.
In a tweet on its Twitter feed, MTGox said it was fighting off a distributed denial-of-service (DDoS) attack, which involves a site being bombarded with huge amounts of data.
This so-called Distributed Denial of Service (DDoS) attack relies on having enough users, voluntary or not, to flood a site with so much traffic that it gets shunted offline.
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The UK Serious Organised Crime agency took its website offline for several hours on 20 June after it appeared to be a victim of a distributed denial of service (DDoS) attack.
If the Twitter handle really is behind the outrage, via what he claims was a distributed denial of service (DDoS) attack coordinated by public and private bot scripts, his motivations are unclear.
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The group said it had used a distributed denial of service attack (DDoS) which bombards a target website with so much data that it becomes overwhelmed.
He will not face trial on another count of operating a "denial of service attack" (DDoS), which will lie on file.
Security experts say the attack uses more sophisticated techniques than most DDOS (distributed denial of service) attacks and targets the Web's infrastructure, which has led to other sites performing slowly.
Arbor Networks, a firm which specialises in protecting against DDoS attacks, also said it was the biggest such attack they had seen.
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Security experts said the attack used more sophisticated techniques than most distributed denial of service, or DDoS, attacks and targeted the Web's infrastructure, which led to other sites performing slowly.
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