A prolific piece of Trojan smartphone malware which installs malicious apps, games, and continually pushes pop-up adverts onto victim's phones is making its creators as much as $500,000 per day.
Hummer was first discovered by the Cheetah Mobile Security Research Lab in 2014, but the malware initially lay dormant for many months. However, a blog post by the security researchers details how Hummer started infecting hundreds of thousands of phones in summer last year, before exploding into 2016.
Every time the Trojan installs a new application on the infected devices, it's thought the developers make $0.50. While that may sound like a small amount, the proliferation of Hummer means its creators make big bucks.