security researchers from Damballa though, click-fraud can evolve: “Click-fraud malware infections can become something more sinister. In May, Damballa Failsafe tracked and recorded the activity of a click-fraud infection that pulled in three additional click-fraud infections plus CryptoWall, which encrypts the files on the host system to render them inaccessible to the user. Within a couple of a couple hours a simple click-fraud infection escalated to a crippling malware infection. Suddenly, that infected device became a high-risk priority.“
If there is one lesson to be learned from all of this: No malware is too small or “unimportant” to become really dangerous at some point.