denial-of-service
UK[dɪˌnaɪəl əv ˈsɜːvɪs]US[dɪˌnaɪəl əv ˈsɜːrvɪs]
n
A type of cyberattack where an attacker disrupts the normal functioning of a network, service, or website by overwhelming it with a flood of internet traffic, making it inaccessible to its intended users.
Morpheme Breakdown
denial
of
service
denial
the act of refusing or preventing.
of
service
Etymology
The term is a modern legal and technical compound, constructed from common English words to describe a specific malicious act. "Denial" originates from the Latin 'denegare', meaning to refuse or reject an assertion, which evolved into the concept of withholding or preventing access. "Service," from Latin 'servitium', broadened from its original sense of slavery to encompass any useful function or system provided. When combined in the late 20th century within the context of computer security, the phrase "denial of service" logically and literally describes the attack's objective: to cause a "refusal" or "prevention" of a "service" to its legitimate users by exhausting its resources, transforming abstract Latin roots into a concrete digital threat.
Analysis
Structure: denial + of + service
denial: From Latin 'denegare' (to deny, refuse), via Old French. In this compound, it functions as the core action noun meaning "the act of refusing or preventing."
of: From Old English, a preposition indicating the relationship between the action (denial) and its target.
service: From Old French 'servise', from Latin 'servitium' (slavery, servitude), from 'servus' (slave). In this compound, it functions as the noun representing the computer system or network resource being targeted.
Examples
The company's website was taken offline by a massive distributed denial-of-service attack.
Hackers used a botnet to launch a denial-of-service attack against the online gaming platform.
Implementing robust firewalls can help mitigate the risk of a denial-of-service incident.