Upstream commit to prevent this exploit is not present in current sumokoin code.
@sumoshi: Can you merge
these commits into sumokoin?
We were not reported as at the time we were still in stealth, we'll need an urgent update. We'll scan the blockchain to see any suspicion and report to you though we doubt it can be easily exploited as our blocksize had increased significantly from original Monero (240KB vs 60KB) and forced high ringsize could be a plus for protection.
Thanks a lot for report.
It's very nice to see you here. If this coin is listed on the bittrex exchange then it will be a interesting coin after XMR.
I also joined this mining of sumokoin but now the diff is so high and it seems no much profit mining .
I will consider to buy some coins on the cryptopia exchange and it's still very cheap.
Thank you very much for your kind support.