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Software designed to be installed surreptitiously and steal information from the user or inflict harm on their computer. Never download anything from a website unless you are 100% certain it is legitimate—you never know when a site is trying to trick you into downloading malware. The new wave of malware has been locking users' files behind an encrypted password, which they have to pay the authors of the malware to have unlocked.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. malicious software; software that intentionally harms normal computer software. (Includes viruses, spyware, data miners, trojan horses, and other programs designed to damage or destroy a computer.) The industry is concerned about the increase in “malware” but leaders don’t know what to do at this point. I used all sorts of stuff to get rid of the evilware, but it’s still there somewhere.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.