: software designed to interfere with a computer's normal functioning

Examples of malware in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The cybersecurity firm Palo Alto Networks recently studied websites at domain names whose URLs are frequently hallucinated by AI chatbots, discovering at some of these sites a range of malware and other malicious code. David Berreby, IEEE Spectrum, 13 Aug. 2026 Whether delivering malicious content through phishing attacks, fraudulent payment requests or links to malware, notification abuse is a security issue that’s hard to ignore. Davey Winder, Forbes.com, 12 Aug. 2026 To compensate, attackers have increasingly relied on infostealer malware and adversary-in-the–middle attacks. Dan Goodin, ArsTechnica, 11 Aug. 2026 Exactly how the malware entered the city's systems, and who may be responsible, has not been detailed by officials. Steve Large, CBS News, 11 Aug. 2026 See All Example Sentences for malware

Word History

Etymology

malicious + -ware (as in software)

First Known Use

1990, in the meaning defined above

Time Traveler
The first known use of malware was in 1990

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Cite this Entry

“Malware.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/malware. Accessed 16 Aug. 2026.

Kids Definition

: software designed to interfere with a computer's normal functioning

Legal Definition

: software that is designed to interfere with a computer's normal functioning and that can be used to commit cybercrime (as by revealing passwords, PINs, and other sensitive data)
Etymology

mal- bad + software

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