What type of attack aims to overload a network and disrupt service availability?

The focus of the question is on the type of attack that disrupts network service availability through the overwhelming of resources. A Denial of Service (DoS) attack specifically aims to flood a network, server, or application with excessive traffic, making it unavailable to legitimate users. This can be accomplished through various methods, such as sending a vast number of requests in a short period or exploiting weaknesses in the network protocols.

In contrast to other types of cyber threats, a DoS attack primarily centers on service disruption rather than gaining unauthorized access (as in hacking attempts), infecting devices with harmful software (like malware), or deceiving individuals into providing sensitive information (as seen in phishing attacks). Understanding the unique characteristics and goals of these attacks is essential for developing effective countermeasures and response strategies.