Biggest miner on MPH was 200 Kh yesterday, now there is one at 1,400 and another at 400. I'm guessing either the botnets are getting back in the game or someone figured out how to get their asics going on this version already.
Google had massive problems with spam in 2012 and then they started rolling out algorithms that stopped the spam: panda, penguin
which eventually made their search engine almost immune to spam. So if software developers can just persist, they can win this war against the ASICS. Software developers are able to create an almost impregnable environment by just constantly adding coding requirements.