Since few days theres a video where hackers show casino on which they play and double-spend the money.
Yet they went futher and put this as a service that anybody can use, they take 10% cut of the amount you use.
http://www.glasshunt.co/exploits/bitcoin-double-spend
Some users below video claim that tried this and it didnt work (so lost 10%).
It is worth noticing that this "hack" works only one zero-confirmation sites, which are rather rare or mostly non-existent now.
Amanda made interview with the creators:
it doesn't work.
https://steemit.com/bitcoin/@bkkshadow/bitcoin-double-spend-is-the-glass-hunt-exploit-a-scam
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It is supposed to work, as I see by sending the second transaction with a higher fee..funny thing they got hacked , maybe that was the cause of the errors some reported. Another thing to take in mind is that it works ONLY on 0 confirmation payments, I'm still interested in the academy the website advertises.
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