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Denial-of-Service Attack

Explore denial-of-service attacks to understand how attackers disrupt access by overwhelming or crashing applications. Learn different attack types such as flood and crash attacks, along with distributed strategies. This lesson also covers practical defenses including black hole routing and rate limiting, preparing you to help safeguard web applications against DoS threats.

A denial of service or DoS, attack is a type of attack in which the attacker tries to crash an application so that the legitimate users are not able to access the application. The attacker does not gain any benefit from this attack. The main purpose of this attack is to harm an organization, and is often carried out by a competitor or mischievous hacker.

The first DoS attack was done by 13-year old David Dennis in 1974. Dennis wrote a program using the external or ext command that forced some computers at a nearby university research lab to power off. ...

Types of Denial of Service