A distributed denial-of-service (DDoS) attack primarily targets availability, although its service disruption can still cause serious business harm.

### Why this is right A distributed denial-of-service attack overwhelms a service with traffic so users cannot reach it. That makes availability the primary target; revenue loss and customer dissatisfaction are consequences of the interruption. ### The concept Availability concerns timely access to a service. A DDoS attack uses traffic from multiple sources to burden a target system. The activity does not directly aim to read or alter stored information, so confidentiality and integrity are not its primary targets in the scenario. Business harm can nevertheless be substantial because customers cannot use the site. ### Terms - **DDoS**: Distributed Denial-of-Service. An attack that uses multiple sources to overwhelm a service and prevent legitimate access. ### Remember A service outage is an availability problem even when the attack does not directly target data.