The Mac-based Flashback Trojan caused a world of hurt for some, and really tarnished Apple's invincible mantra to viruses, and such. But, the maker of the Flashback Trojan enjoyed his wares being spread out to more than 600,000 Macs across the world.

It's been estimated that the maker of the trojan could've been generating more than $10,000 per day in fraudulent ad clicks. More analysis from Symantec points toward the author of the trojan probably never monetizing the trojan whatsoever.

Even though the trojan made its way into 600,000 machines, the ad-click component of Flashback only crawled into roughly 10,000 machines, less than 2-percent of all infected. Symantec says that around 10 million fraudulent ads were displayed on the machines that were compromised, but users only clicked them around 400,000 times. Over three weeks, those 400,000 clicks resulted in around $14,000 for the trojan maker.