After translation from google, seems that a Chinese exchange called 796 was hacked out of 1,000 BTC, by hackers switching the deposit (or withdrawal) address.. or something to that effect.

"... after detailed analysis of various logs and audit records, we found the system to update a few days ago the existence of sub-module exploited by hackers, causing the user to mention the current address has been tampered with, coupled with hackers deliberately used a similar address with the original withdrawals address to confuse users and our manual review."

Here is the google translation link I used.
https://translate.google.com/translate?hl=en&sl=zh-CN&tl=en&u=http%3A%2F%2F8btc.com%2Fthread-13689-1-1.html&sandbox=1