A guide aims to educate the Internet user on what scareware is, the risks posed by installing it, how it looks like, its delivery channels, and most importantly, how to recognize, avoid and report it to the security community. The guide is based on the fact that 99% of the current releases rely on social engineering tactics. This end user-friendly guide is aimed at educating the Internet users on the risks of installing fake security software and how to avoid it. The gangs themselves earn hundreds of thousands of dollars in the process of advertising scareware.
Source: https://threatpost.com/ultimate-guide-scareware-protection-091409/72294/