CREST Practitioner Security Analyst (CPSA) Practice 2026 - Free CPSA Practice Questions and Study Guide

In the context of cybersecurity, DoS stands for Denial of Service. A Denial of Service attack is a malicious attempt to disrupt the normal functioning of a targeted server, service, or network by overwhelming it with a flood of traffic. This type of attack can render a website or service unusable, preventing legitimate users from accessing it.

The fundamental goal of a Denial of Service attack is to make a system unavailable to its intended users. Attackers often employ various techniques to achieve this, such as sending an excessive number of requests or exploiting vulnerabilities in the target system. Understanding DoS is crucial for cybersecurity practitioners, as it emphasizes the importance of creating resilient systems and implementing measures to defend against such disruptions.