Microsoft has cast doubt on the Fireball campaign, believed to be a serious threat to consumers and the enterprise alike. According to Windows Defender researcher Hamish O’Dea, the recent reports relating to the Fireball cybercriminal campaign may have been “overblown.” A recent Check Point research paper claimed Rafotech, a large digital marketing agency based in Beijing, runs the Fireball scheme, which represents a “great threat to the global cyber ecosystem with 250 million infected machines and a grip in one of every five corporate networks.”