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Denial of Sevice Attack

Visitors to BetOnline and Skybook have reported the sites are on and off line. Research into the topic suggests that there has been a denial of service attack on these sites.

What is a Denial of Attack?

A denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer resource unavailable to its intended users. Although the means to, motives for, and targets of a DoS attack may vary, it generally consists of the concerted, malevolent efforts of a person or persons to prevent an Internet site or service from functioning efficiently or at all, temporarily or indefinitely.

Perpetrators of DoS attacks typically target sites or services hosted on high-profile web servers such as banks, credit card payment gateways, and even DNS root servers.

One common method of attack involves saturating the target (victim) machine with external communications requests, such that it cannot respond to legitimate traffic, or responds so slowly as to be rendered effectively unavailable. In general terms, DoS attacks are implemented by:

  • forcing the targeted computer(s) to reset, or consume its resources so that it can no longer provide its intended service; or,
  • obstructing the communication media between the intended users and the victim so that they can no longer communicate adequately.

Denial-of-service attacks are considered violations of the IAB’s Internet proper use policy. They also commonly constitute violations of the laws of individual nations.