Second crypto-currency heist to hit Poloniex, after an anonymous attacker boosted 35,000 units of Counterparty currency last month. Anonymous attacker returned all of the stolen bitcoins, and detailed how he’d stolen the XCP in the first place. In exchange for the safe return of the bitcoins, the exchange agreed to not press charges. In another case, attackers used a Pony botnet to steal 700,000 credentials, including website and email logins, as well as FTP secure shell and remote desktop.”]
Source: https://www.darkreading.com/attacks-breaches/bitcoin-heists-cause-more-trouble