The adware known as Fireball (detected by Trend Micro as PUA_RAFOTECH) has been making waves after reportedly infecting over 250 million computers worldwide, with 20 percent occurring on corporate networks. Data from Trend Micro Smart Protection Network has detected Fireball in numerous countries like Australia, France, India, New Zealand, Turkey, Vietnam, and South Africa. Here’s what users and enterprises need to know about this potential threat and what can be done to protect systems against it.