I was one of many mining over 90% over banx hashrate and i assure u that we didnt try any doublespend attacks. This is the first time i hear about it.
Well I don't know what it means to "mine over 90% over banx hashrate", but hacks and attacks have been mentioned multiple times. Since mining only happened for 1 week, it narrows down the suspects.
Besides, Mark said he spoke to the bigger miners themselves about the mining problems, and he explained that he was cancelling the mining.
You can see exactly how the mining happened, and why it was easy for miners to 51% the small network subtly and keep creating new shares for a while.
Our shares were previously available on c-cex but users on their system were involved in a hack to our blockchain, which meant that they had to be moved over to our own exchange for security purposes.
Mark Lyford