Bitstamp

Bitstamp hot wallet hacked for 18,866 BTC due to human error

Summary # During the events that unfolded between November 2014 and February 2015, an unknown attacker targeted Bitstamp employees through phishing messages and exploiting compromised accounts to steal the hot wallet file. During the attack, 18,866 BTC ($6.7 million adjusted for inflation) were stolen. Bitstamp suspended trading, notified customers, and eventually compensated them for their losses. The security failure stemmed from employees falling prey to social engineering attacks and distributing malware-laden files. ...