Brain, the first piece of malware in computing history, was crafted by two Pakistani brothers in 1986. Mikko Hypponen, chief research officer at F-Secure, tracked the brothers down last year , and while they claimed that the virus was created with innocent intentions, the larger malware market hasn’t been so mild-mannered.
TrendMicro  followed the evolution of malware from viruses to worms all the way to the current hacktivist era.
Here are a few highlights from their infographic:
For more information on malware, check out the Trend Micro infographic .