Users are tricked into believing that they are downloading a Flash Player update, or other popular free software, but often do not notice other unwanted applications attached to the installation steps of the software they initially downloaded. Adware is most commonly installed using a deceptive software marketing method called ‘bundling’. Adware refers to unwanted applications that generate revenue for their creators by displaying advertisements on users’ computers. To remove threats, you have to purchase the full version of Combo CleanerĪ is an adware infection.