Longman Dictionary of Contemporary English homepage

denial of service attack

 noun
     
NEW! See related topics: COMPUTERS
denial of service attack [countable]
TD an attempt to make a company's website stop working. This is done by sending so much data to the website that the company's computers become unable to work properly. The result is that customers of the company cannot use the online services that the company provides.
Definition from the Longman Dictionary of Contemporary English
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