# what is denial of service attack definition from whatis com

What is cloud outage? - Definition from WhatIs.com » If a cloud outage should occur, the provider should supply customers with status updates on a regular basis and an estimate of when the service will be restored. Searchdisasterrecovery.techtarget.com

What is ping of death? - Definition from WhatIs.com » On the Internet, ping of death is a denial of service (DoS) attack caused by an attacker deliberately sending an IP packet larger than the 65536 bytes allowed by ... Searchsecurity.techtarget.com

What is session ID? - Definition from WhatIs.com » See complete definition · denial-of-service attack: A denial-of-service attack is a security event that occurs when an attacker prevents legitimate users from ... Searchsoftwarequality.techtarget.com

What is ingress filtering? - Definition from WhatIs.com » This definition explains the meaning of ingress filtering and how it can be used to block traffic from… Preventing IP spoofing and denial-of-service attacks. Searchnetworking.techtarget.com

What is DNS attack? - Definition from WhatIs.com » This definition explains security exploits in which an attacker takes… Denial of Service – an attack in which a malicious bot sends send more traffic to a targeted  ... Searchsecurity.techtarget.com

What is distributed denial of service (DDoS) attack? - Definition from… » A distributed denial-of-service (DDoS) attack is an attack in which multiple compromised computer systems attack a target, such as a server, website or other ... Searchsecurity.techtarget.com

What is DNS amplification attack ? - Definition from WhatIs.com » A DNS amplification attack is a reflection-based distributed denial of service ( DDos) attack. The attacker spoofs look-up requests to DNS servers to hide the ... Whatis.techtarget.com

What is denial-of-service attack? - Definition from WhatIs.com » Denial-of-service attacks in which malicious actors take actions to make systems, services and networks unusable can be carried out by flooding them with ... Searchsecurity.techtarget.com

What is zombie computer (zombie bot)? - Definition from WhatIs.com » In one form of denial of service attack, a zombie is an insecure Web server on which malicious people have placed code that, when triggered at the same time as ... Searchmidmarketsecurity.techtarget.com

What is a denial of service attack (DoS) ? - Palo Alto Networks » A Denial-of-Service (DoS) attack is an attack meant to shut down a machine or network, making it inaccessible to its intended users by flooding it with traffic. Paloaltonetworks.com