Thursday, April 21, 2005
What is a Denial of Service attack?
In a DoS attack, the goal of the attacker possibly cannot be to steal data or user information. The attacker just wants to disrupt the service.
Computers and networks need network bandwidth, CPU power, hard disk space etc to operate. Even if one of the resource is consumed in excess, then it can lead to a DoS attack. On example of consuming scare resources to cause a DoS attack is a SYN flood attack.
A Distributed Denial of Service (DDoS) attack occours, when a bunch of machines direct their attack towards a single target. Sometimes crackers infect vulnerable machines (like unpatched machines) with malicious code to orchestrate a DDoS attack on a particular target. This gives you one more reason to patch-up your computers with the latest security updates.
Copyright Anand Jain 2004, 2005. All rights