[tromp]

> till they get to bitcoin

All the GPUs of all gamers in the world can't put a dent in bitcoin's ASIC based hashrate.

Ethereum is the best they can hope for. They better hurry up though, as it won't stay PoW for long.

[Wassimo]

I think it's possible but they necessarily wouldn't have to target bitcoin until later. Smaller Currencies to start and exposing the flaw will expose a hole even in bitcoin.