scareware
n.— «Scareware is a term for applications that find fictitious malware on a user’s computer and then try to trick the user into purchasing unnecessary and fraudulent anti-malware software or services. Scareware relies on social engineering to deceive, like many phishing attacks and other forms of malware.» —“Mac Users Targeted By ‘Scareware’ Fraud Application” by Thomas Claburn InformationWeek Jan. 15, 2008. (source: Double-Tongued Dictionary)
Further reading
Default as a noun and default as a verb are the same word, with a familiar English stress shift: nouns often take first-syllable stress, while verbs often take second-syllable stress, as with the different pronunciations of record. A New York City...
Chrissie in Arlington, Virginia, has fond memories of her family playing bridge together. Whenever a trick with four cards that included an ace, a two card, a three card, and a four card was played, her grandmother would chuckle and say, Ace, two...