Denial of Service (DoS\DDoS)

A denial-of-service (DoS) is any type of attack where the attackers attempt to prevent legitimate users from accessing the service or network. In the DoS, the attackers usually send several messages asking the server to accepts requests from invalid return addresses. This can be done in several ways. This attack included but not limited to: - Flooding the network - Disrupting communication between machines or preventing access to a service - Preventing individual from accessing a service. A person victim of DoS does not typically result in the theft or loss of important information, they cost the victim a great deal of time and money to handle. DDoS Stacheldraht attack diagram. 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 the Internet. Denial of service is typically accomplished by flooding the targeted machine or resource with superfluous requests in an attempt to overload systems and prevent some or all legitimate requests from being fulfilled. In a distributed denial-of-service attack (DDoS attack), the incoming traffic flooding the victim originates from many different sources. This effectively makes it impossible to stop the attack simply by blocking a single source. A DoS or DDoS attack is analogous to a group of people crowding the entry door of a shop, making it hard for legitimate customers to enter, disrupting trade. Criminal perpetrators of DoS attacks often target sites or services hosted on high-profile web servers such as banks or credit