Comment Cost analysis from article differs from summary (Score 3, Interesting) 66
I'm not sure where the the article summary got its notion about the costs. The article doesn't address that- instead it spoke to how much could be made selling the service. From the article:
Assuming a selling price of $2 per 1,000 solved captchas, our token harvesting attack could accrue $104 - $110 daily, per host (i.e., IP address). By leveraging proxy services and running multiple attacks in parallel, this amount could be significantly higher for a single machine.
I think the authors of the article were trying to communicate how much money they could make selling this 'service' to other unsavory agents. It could be a lucrative business given the assumed market rates of $2 per 1k, and the mentioned optimizations could make it even more attractive. It makes me wonder if you could set up the whole thing in a cloud computing environment like AWS and come out ahead.