distributed denial of service

noun phrase

Definition of distributed denial of service

: an attempt to interfere with the normal operations of an online service (such as a website or app) by overwhelming it with repeated automated requests for data from multiple sources Although computer viruses, worms and other so-called malware can be countered with good security practices and up-to-date defensive software, distributed denial of service attacks are hard to protect against.— John Schwartz A new distributed denial-of-service tool found recently in computers at several universities may be able to avoid defenses put up by Web sites …— Jack McCarthy abbreviation DDoS

First Known Use of distributed denial of service

1998, in the meaning defined above

Buying Guide

Our Reviews team has selected the best MacBooks.

Learn More About distributed denial of service

Time Traveler for distributed denial of service

Time Traveler

The first known use of distributed denial of service was in 1998

See more words from the same year

Dictionary Entries Near distributed denial of service

distributed

distributed denial of service

distributedly

See More Nearby Entries 

Statistics for distributed denial of service

Cite this Entry

“Distributed denial of service.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/distributed%20denial%20of%20service. Accessed 1 Oct. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!