denial-of-service attack. An attack on a website in which the attacker exploits a weakness or a design limitation of the web server to overload or halt the service, so that the service becomes un-available for use.
A malicious kind of attack that floods the intended destination IP address with requests. Example: by pinging 400 to 500 times per second.
a computerized assault launched by an attacker to overload or halt a network service, such as a Web server or a file server
a deliberate attempt to interfere with network performance by means of forged Internet Control Message Protocol (ICMP) Echo Request packets directed to IP broadcast addresses
a form of computer vandalism or sabotage, with the intention to crash a system or otherwise render it unavailable
a malicious attempt to bring down your email infrastructure
an organized, criminal attempt to overload a server with fake requests
Denial of Service Attack. Most DoS attacks are overloading servers with redundant traffic. All servers can handle traffic volume up to a maximum, beyond which they become disabled.
DoS (Denial of Service) is a type of attack when too many concurrent requests overload the system; the server is no more able to respond to the requests of authorized users or fails.
Denial of Service Attack. An attempt by hackers to deny the service of a server by flooding it with useless data, disconnecting it, denying access by users, etc.
Denial of Service attack. A method of attacking a server by sending an abnormally high volume of requests over a network; this slows down the performance of a server, making it unavailable to any users.
Denial of Service attack. A method of attacking a server by sending an abnormally high volume of requests over a network, which essentially slows down the performance of a server, such that the server is unavailable for any users.
A Denial of Service (DoS) attack is a remote attack against a servers TCP/IP stack or services. DoS attacks can saturate a servers bandwidth, saturate all available connections for a particular service, or even crash a server.
Short for denial-of-service attack, a type of attack on a network that is designed to bring the network to its knees by flooding it with useless traffic. Many DoS attacks, such as the Ping of Death and Teardrop attacks, exploit limitations in the TCP/IP protocols. For all known DoS attacks, there are software fixes that system administrators can install to limit the damage caused by the attacks. But, like viruses, new DoS attacks are constantly being dreamed up by hackers.
Action against a host resulting in the target's inability to perform service(s) for other users, particularly over a network.
A DOS, or Denial of Service attack, is when a user attempts to deny access to a web server by repeatedly accessing a page or sending malformed requests to a webserver. This can be effectively prevented by using mod_throttle as described in Section 4.3.2. A D-DOS, or Distributed Denial of Service attack, is when these requests come from multiple sources at the same time. Unfortunately, these are much more difficult to defend against.
On the Internet, a denial of service (DoS) attack is an incident in which a user or organization is deprived of the services of a resource they would normally expect to have. Typically, the loss of service is the inability of a particular network service, such as e-mail, to be available or the temporary loss of all network connectivity and services. In the worst cases, for example, a Web site accessed by millions of people can occasionally be forced to temporarily cease operation. A denial of service attack can also destroy programming and files in a computer system. Although usually intentional and malicious, a denial of service attack can sometimes happen accidentally. A denial of service attack is a type of security breach to a computer system that does not usually result in the theft of information or other security loss. However, these attacks can cost the target person or company a great deal of time and money.
A denial-of-service attack (also, DOS attack) is an attack on a computer system or network that causes a loss of service to users, typically the loss of network connectivity and services by consuming the bandwidth of the victim network or overloading the computational resources of the victim system.