The comment was referencing an anonymous whitehat talking about having hacked an exchange for 100BTC due to way the service was doing their accounting. They'd essentially found a race condition that allowed them to overwrite a large withdrawal with the result of a smaller one, affording them unlimited Bitcoin. It was inferred that this was coinbase, though not directly stated I don't think.
Why is MongoDB bad? It's not ACID compliant. It's hard to determine the state of the database with concurrent processes attempting to modify its data. Given the explanation it's fairly clear that it's Coinbase being talked about.
http://www.reddit.com/r/Bitcoin/comments/1wtbiu/how_i_stole_...
Why is MongoDB bad? It's not ACID compliant. It's hard to determine the state of the database with concurrent processes attempting to modify its data. Given the explanation it's fairly clear that it's Coinbase being talked about.
http://en.wikipedia.org/wiki/ACID