“Hackers built an elaborate network of robot browsers to view video ads, making the group behind it approximately $3 million to $5 million every 24 hours, according to a report. Security firm White Ops released a report on a bot farm named Methbot, which it called ‘the largest and most profitable ad fraud operation to strike digital advertising to date.’ “
Source: Hackers Set Up Ad-Watching Network to Make $3M to $5M Daily – Nextgov.com