> Whenever F2Pool's block timestamps reach the point where mining difficulty is supposed to decrease, they artificially set them to be one second earlier. F2Poo

> Whenever F2Pool's block timestamps reach the point where mining difficulty is supposed to decrease, they artificially set them to be one second earlier. F2Pool has been executing this attack over the past two years, and the evidence has been hiding in plain sight! ... This has the effect of making it harder for the rest of the network to compete against F2Pool's blocks. In this way, F2Pool can, or so it appears, give itself an advantage while taking zero risk. It would be irrational not to adopt this strategy. The thread doesn't say what happens if the entire network adopts this strategy - maybe it's in the paper...