malware

noun

mal·​ware ˈmal-ˌwer How to pronounce malware (audio)
: 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.
Additional features include CleanWeb, which blocks ads, trackers, and malware at the network level, and a Kill Switch that cuts internet access if the VPN connection drops unexpectedly. Stackcommerce Team, PC Magazine, 25 Apr. 2026 Researchers have finally cracked disruptive malware known as Fast16 that predates Stuxnet and may have been used to target Iran’s nuclear program. Matt Burgess, Wired News, 25 Apr. 2026 All deliver explicit pornography and, in at least one case, a scam site falsely claiming a visitor’s computer is infected and advising the visitor to pay a fee for the non-existent malware to be removed. Dan Goodin, ArsTechnica, 24 Apr. 2026 Strong antivirus software uses behavior detection to monitor what programs are doing in real time, helping flag suspicious activity even if the malware hasn't been seen before. Kurt Knutsson, FOXNews.com, 21 Apr. 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 1 May. 2026.

Kids Definition

malware

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

Legal Definition

malware

noun
mal·​ware ˈmal-ˌwer How to pronounce malware (audio)
: 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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