Hace unos meses antes de que entrara en escena GHas.io entre BTCGuild y 50BTC se repartían mas del 50% de los bloques encontrados, entonces 50BTC sufrió un ataque (yo perdí 1
BTC ahí) y destrozaron su base de datos, desde entonces ha desaparecido del mapa, en una nota que sacaron después del ataque dijeron algo que me llamo mucho la atención porque siempre había supuesto que los ataques DDoS contra los pools provenían de gente ajena al mundo
BTC:
Third thing is that we have weird jumping luck during August-September period which jumped from 40% to 120% daily and sharply increased hash rate of the few new users with abnormal large amount of stale shares.
Obviously this couldnt be a regular coincidence and obviously this cant be applied by one certain user. In general all of this only make sense if one or few competing pools decided to eliminate 50BTC for whatever reason. We are exploring all available data to figure out if some users was not real users but the proxied shares from the evilpool.
When miner formally connects to the evilpool it actually goes to the 50BTC through a proxy to get a job, and after that evilpool proxies all shares except of winning ones back to 50BTC. This could cause total bad luck that weve faced in a last few weeks.