That's why I don't put all my coins on an exchange. I only transfer my coins on it if I am ready to sell or trade it. Once again, you don't own the private key, then its not your coin.
Yep, and all newbies ought to take note of this advice--no doubt there were at least some members of Upbit who got screwed from the hack because they were keeping their coins on it even if it was overnight.
I think I created an account on Upbit a while back because they were one of the only exchanges that sold an obscure shitcoin that I was interested in, but I don't think I ever ended up trading with them. They're not a huge exchange to my knowledge, and I'm wondering if they can recover from this or if this will be the end of them.
Where do they operate out of? Does anyone know? I haven't read anything about that yet, nor do I know if they were one of the "legit" exchanges that were accountable to government regulators, but I'm thinking they weren't. Anyways, yikes. Another big hack.
Edit: Well, that just took a simple googling to find out that they're a S. Korean exchange. Looks like they were the subject of a fraud probe last year, something I hadn't read about until just now when I looked at the Wikipedia article on them. Interesting.