Final answer:
A Denial of Service (DoS) attack denies authorized users access to network resources by overwhelming a system with traffic or exploiting vulnerabilities. It is distinct from other cyber threats such as worms, logic bombs, and social engineering tactics.
Step-by-step explanation:
The type of attack that denies authorized users access to network resources is known as a Denial of Service (DoS) attack. A DoS attack typically overwhelms a network or service with excessive traffic, thus preventing legitimate users from being able to access resources as intended. This type of attack can come in various forms, such as flooding a server with requests or exploiting vulnerabilities within the network infrastructure.
Other options listed, like a worm, a logic bomb, and social engineering, represent different types of cybersecurity threats. A worm is a type of malware that replicates itself and spreads through networks. A logic bomb is a piece of code intentionally inserted into software and will execute a malicious function when specified conditions are met. Social engineering is a tactic used to trick individuals into revealing confidential information.