Trend Micro: Volume of rogue anti-spyware applications has jumped 500 percent. 10 percent of all new computers get infected by these rogue programs within the first 24 hours. Attackers can make anywhere from $30 to $80 a victim by selling them phony security tools. The best defense is to be sure you have a legitimate security app running on your machine. One recent case came to a head with a class action lawsuit against WinFixer, which allegedly created dozens of these applications.”]
Source: https://www.darkreading.com/analytics/pop-ups-fake-security-alerts