It is is an attempt to make a computer resource unavailable to its intended users by remote users. This is one of the Botnet Attacks. It generally consists of the concerted efforts of a person or people to prevent an Internet site or service from functioning efficiently or at all, temporarily or indefinitely. Creators who use make or program this attack will target sites or services hosted on high-profile web servers such as banks, credit card payment gateways, and even root nameservers.
