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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.
DDL—Data Definition Language; DDoS—Distributed Denial of Service; DDR—Double Data Rate; DEC—Digital Equipment Corporation; DES—Data Encryption Standard; dev—development; DFA—Deterministic Finite Automaton; DFD—Data Flow Diagram; DFS—Depth-First Search; DFS—Distributed File System; DGD—Dworkin's Game Driver
In computer science, a zombie computer is a computer connected to the Internet that has been compromised by a hacker, computer virus or trojan horse and can be used to perform malicious tasks under remote direction. Botnets of zombie computers are often used to spread e-mail spam and launch denial-of-service attacks (DDoS). Most owners of ...
Zombies can be used to conduct distributed denial-of-service (DDoS) attacks, a term which refers to the orchestrated flooding of target websites by large numbers of computers at once. The large number of Internet users making simultaneous requests of a website's server is intended to result in crashing and the prevention of legitimate users ...
At the time this vulnerability was first reported, the computer memory used by a billion instances of the string "lol" would likely exceed that available to the process parsing the XML. While the original form of the attack was aimed specifically at XML parsers, the term may be applicable to similar subjects as well.
DDoS mitigation is a set of network management techniques and/or tools for resisting or mitigating the impact of distributed denial-of-service (DDoS) attacks on networks attached to the Internet by protecting the target and relay networks.
In particular, the caching and redundancy features of DNS mean that it would require a sustained outage of all the major root servers for many days before any serious problems were created for most Internet users, and even then there are still numerous ways in which ISPs could set their systems up during that period to mitigate even a total ...
In an HTTP flood, the HTTP clients such as web browser interact with an application or server to send HTTP requests. The request can be either “GET” or “POST”. The aim of the attack is when to compel the server to allocate as many resources as possible to serving the attack, thus denying legitimate users access to the server's resources.
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