That makes zero sense..... IF they did a DDOS attack You cant use the service.. your denying / basically cutting the site off.. THat doesn't mean you can USE IT.. That's like when Xbox was being attacked and the hackers were still able to play.. IMPOSSIBLE... it was a glitch.. this happens all the time in the stock market.. maybe someone was lucky and had a Limit order set at that price... but a DDOS attack by Hackers.. THAT MAKES ZERO SENSE ... and it was only on Coinbase that it crashed so low.. other exchanges didn't see this flash crash...