Bitcoinica, a Bitcoin exchange started by a 17-year old teenager Zhou Tong, has been shut down for security investigations. Posting on BitCoin Talk forums, Zhou posted a message stating the exchange has been taken down for security investigations after noticing a suspicious transaction in which 18547.66 bitcoins(worth about $91,000) were transferred from the exchange.
This is the transaction in question:
“account” : “”,
“address” : “182tGyiczhXSSCTciVujNRkkMw1zQxUVhp”,
“category” : “send”,
“amount” : -18547.66867623,
“fee” : 0.00000000,
“blockhash” : “00000000000003f6bfd3e2fcbf76091853b28be234b5473a67f89b9d5bee019c”,
“blockindex” : 1,
“txid” : “7a22917744aa9ed740faf3068a2f895424ed816ed1a04012b47df7a493f056e8″,
“time” : 1336738723
Zhou maintains that apart from the Bitcoins, the database was also stolen but the passwords were salted and encrypted using bcrypt. Zhou mentions that the stolen bitcoins are likely to be reimbursed by Bitcoinica in USD. This isn’t the first time Bitcoinica’s been broken into; few months ago Bitcoinica’s bitcoin wallet which stored the funds were stolen due to a breach in Bitcoinica’s then webhost — Linode. Bitcoinica has been criticized for not making use of offline transactions which would’ve prevented both the break-ins.