Ver
Software or web site that
purports to be security software reporting a threat against a user's computer
to convince the user to purchase unneeded software or install malware.
http://cyber.law.harvard.edu/cybersecurity/Keyword_Index_and_Glossary_of_Core_Ideas
Scareware is a type of
malware designed to trick victims into purchasing and downloading useless and
potentially dangerous software.
http://whatis.techtarget.com/
A more specific kind of
rogueware is scareware, rogue security software, which tries to infect
computers by providing fake security alerts.
ENISA Threat
Landscape [Deliverable – 2012-09-28]