Rest assured that every cryptocurrency exchange platform would see some strange exploiting activity over the coming weeks. If there is one thing the Bitfinex hack has taught us, it is how no exchange is completely invulnerable.In some cases, these exploits present themselves in a rather strange way, though.
According to a report sent to us via email, there is a new kind of bug on the BTC-E exchange. The user told us how he placed a fiat currency buy order for Bitcoin on the platform. After seeing it partially filled, the transfer was canceled in the hopes of buying slightly cheaper coins. This is not unusual exchange behavior by any means.
http://themerkle.com/btc-e-may-be-vulnerable-to-a-funds-duplication-bug/