One of the biggest, reliable and most trusted Bitcoin exchange — Bitstamp — on Monday announced that it has been a target of a hacking attack, which lead to the theft of "less than 19,000 BTC" (worth about $5 million in virtual currency; one BTC is about $270).

Bitstamp issued a statement on its official website in which the company warned its users not to deposit any Bitcoin to previously issued addresses, so as to prevent further losses. While the investigation is going on, the company has frozen its user accounts, blocked deposits as well as other transactions and suspended the trading business.

Read more at:

http://thehackernews.com/2015/01/bitstamp-bitcoin-exchange-hacked.html