denial of service

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Related to Denial-of-service attack: Distributed Denial of Service Attack

denial of service

A condition in which a system can no longer respond to normal requests. See denial of service attack.
References in periodicals archive ?
OTCQB:VLDI), Ottawa,a developer of world class software based solutions for the management and protection of digital information, data and assets, is issuing the third of three news releases explaining how Validian could prevent, not just detect, the recent onslaught of well publicized Cyber Attacks, including theft of stored digital keys, hacking and denial-of-service attacks.
Sophos virus researchers are warning of a new strain of the Netsky worm, Netsky-R (W32/Netsky-R), which launches denial-of-service attacks on peer-to-peer file sharing sites, including Kazaa, as well as various sites offering software security cracks.
We do have experience on our side, but unfortunately if a denial-of-service attack is taking place there's not a great deal you can do to prevent it from happening.
From denial-of-service attacks to telecommunications fraud, the Secret Services' Electronic Crimes Task Force (ECTF) often nabs the savviest cyber criminals within days of an attack.
This attack is the latest in a series of distributed denial-of-service attacks targeting DNS servers that began late last year.
The solution encompasses Juniper routers and intrusion detection and prevention (IDP) systems with Juniper's service deployment system (SDX) software to prevent session initiated protocol (SIP) attacks, worms and denial-of-service attacks from impacting SIP-based voice communications and network services.
With CloudShield as a valued partner, we are providing attack mitigation services in the network and hosting centers that operate so that the next time a customer is targeted by a denial-of-service attack, it will have zero impact on their day-to-day operations -- and their bottom line.
In a survey of over 100 top enterprise IT and email administrators in the US, over 50% of organizations recognized that they had been hit by an email denial-of-service attack, over 40% recognized that they had been the victim of a directory harvest attack, and a significant percentage had email intercepted or their email servers hacked in the preceding 12 months.
The threat made by Anonymous, which has carried out denial-of-service attacks on multinational corporations such as PayPal, MasterCard, Visa, and Sony in the past, states that they are planning to attack petrochemical companies in protest at the US dollar being used as the currency to buy and sell oil.
But denial-of-service attacks can also be launched from within schools, as illustrated by a case in another New York district, where an assistant principal used e-mail bombs to harass individuals and higher education institutions for a three-year period.
Entanct, one of the leading providers of business lntemet services, says that the awareness that the number of denial-of-service attacks on major Interact sites is growing and warns that service providers need to be extra vigilant and use their own expertise to protect customers.