Gmaxell hasn't posted. Have you all heard from him on this?
Yes he has -
https://bitcointalk.org/index.php?topic=786201.msg8892342#msg8892342https://bitcointalk.org/index.php?topic=786201.msg8895838#msg8895838He has stated he has a GPU farm ready and only needs < 20% of the hashrate to accomplish an attack. He is only one of two guys (the other being ArtFortz who apparently taught him how to TW attack) that ever successfully performed a TW attack on any coin in the past.
I'm not discounting that he has access to a lot of hashing power, but that in and of itself isn't evidence of an exploit.
The TW attack issue can probably be fixed in any case. But there is a possibility that the anonymity issue can't be fixed. This is what BCX said in the prior closed thread and I am seeing some possibility he might be correct. I need to spend some time trying to characterize the amplification.
Well, let's see. We're open to the possibility it exists as well.
Are you telling XMR investors you don't care if BCX steals their money and you will just fix it after the fact?
Sorry I know BCX hasn't given us any proof so normally we should ignore him, but this is BCX a guy who has done it before.
We'll handle it the same way Bitcoin handled the block 74638 attack (which created 184 billion BTC). See:
https://en.bitcoin.it/wiki/CVE-2010-5139