> Some software, notably git, is still using SHA-1, and relying on the fact that the best publicly-known method of generating SHA-1 collisions costs 2⁶⁹ computations, which is expensive. I think it is unwise to rely on this for two reasons. One is that there could be more efficient techniques to compute SHA-1 collisions that we don’t know about. Another is that the cost of doing 2⁶⁹ computations is falling rapidly—at the time of this writing (March 22, 2014), the Bitcoin network is performing enough computation to generate SHA-1 collisions every 131 minutes!
By guesstimating from just looking at the graph to the linked site, it seems the Bitcoin network was at about 100 PH/s, with the network at 185 EH/s, which is close to a 2000x in hashrate since this blogpost went live.