If i'm "lucky"? Ok, lets see if I can tempt him here. 
They are very busy and it is rather likely that you will not get a response at this time.In Oct 2015 (rough figures as guide, impossible for me to study properly) created accounts consist mainly of (or i was just very lucky to "hit" target)
Accounts between 572000 and 575000 are "btcRDkill_"
Accounts between575000 and 600200 are "MrFudged1_"
Accounts between 600200 and 625000 are "KNC_areThief"
That was a wave of spam accounts by the same person. We have been manually banning them back then (I remember having a 5 second refresh timer on the member page) and then the situation started to calm down as we've started using a bot to do it for us. They are a thing of the past (for now).Accounts between 572000 and 575000 are "btcRDkill_"
Accounts between575000 and 600200 are "MrFudged1_"
Accounts between 600200 and 625000 are "KNC_areThief"
Clearly these farmed spammers will just keep coming en masse. You will never keep up with them.
With the appropriate rules and tools we can.