Is it not far easier to acquire the necessary computing power than it was in past? As more and more people converge on the internet, the attack vector increases

Is it not far easier to acquire the necessary computing power than it was in past? As more and more people converge on the internet, the attack vector increases dramatically as well. How much easier is it today to get the same botnet the government used for Flame? Furthermore, the idea of safety behind computational difficulty is going to be eroding away quicker than ever, in the future.