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Diagram of a DDoS attack. Note how multiple computers are attacking a single computer. In computing, a denial-of-service attack (DoS attack) is a cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network.
The attack is then repeated every 12 to 24 hours over a period of days or weeks, causing issues for the company hosting the service. Hit-and-run DDoS is sometimes used as a test DDoS attack. An attacker will inject a few bad packets into a network to test if it is online and functioning. Once the network is verified as functioning, an attacker ...
As a DNS provider, Dyn provides to end-users the service of mapping an Internet domain name—when, for instance, entered into a web browser—to its corresponding IP address. The distributed denial-of-service (DDoS) attack was accomplished through numerous DNS lookup requests from tens of millions of IP addresses. [6]
Low Orbit Ion Cannon (LOIC) is an open-source network stress testing and denial-of-service attack application written in C#.LOIC was initially developed by Praetox Technologies, however it was later released into the public domain [2] and is currently available on several open-source platforms.
On October 21, 2002 an attack lasting for approximately one hour was targeted at all 13 DNS root name servers. [1] The attackers sent many ICMP ping packets using a botnet to each of the servers. However, because the servers were protected by packet filters which were configured to block all incoming ICMP ping packets, they did not sustain much ...
High Orbit Ion Cannon (HOIC) is an open-source network stress testing and denial-of-service attack application designed to attack as many as 256 URLs at the same time. It was designed to replace the Low Orbit Ion Cannon which was developed by Praetox Technologies and later released into the public domain.
Other methods to prevent DDoS attacks can be implemented, such as on-premises and/or cloud-based solution providers. On-premises mitigation technology (most commonly a hardware device) is often placed in front of the network. This would limit the maximum bandwidth available to what is provided by the Internet service provider. [6]
The software development platform GitHub has been the target of censorship from governments using methods ranging from local Internet service provider blocks, intermediary blocking using methods such as DNS hijacking and man-in-the-middle attacks, and denial-of-service attacks on its servers from countries including China, India, Iraq, Russia, and Turkey.