Summary # On the 2nd of August 2016, Bitfinex, a prominent cryptocurrency exchange, experienced a security breach resulting in the theft of approximately 120,000 bitcoins (US$72 million at the time). This incident led to a 20% decline in the trading price of Bitcoin — from US$600 to US$400, reducing the value of the stolen bitcoins to nearly US$58 million. In response to the breach, Bitfinex immediately halted all Bitcoin withdrawals and trading activities.
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Summary # On May 09, 2016, cryptocurrency exchange Gatecoin was hacked, resulting in the theft of approximately $2 million in cryptocurrencies. Hackers gained access to the exchange’s hot wallets and stole funds.
Attackers # The identity of the hackers who carried out the attack on Gatecoin is unknown.
BTC Wallet:
132ymu2ufMP3mDCo9qwKc173PV2Bbm4T2g ETH Wallets:
0x04786aada9deea2150deab7b3b8911c309f5ed90 0xc062dceed93087c9112ff7b02d53e928e49cec09 0x1342a001544b8b7ae4a5d374e33114c66d78bd5f 0xd4914762f9bd566bd0882b71af5439c0476d2ff6 Losses # Gatecoin estimated the losses from the hack to be approximately $2 million.
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Summary # Between March 14 and April 9, 2016, the Swiss-based cryptocurrency exchange, ShapeShift, experienced three security breaches. The initial compromise was an insider threat, where an employee responsible for the platform’s security and infrastructure misappropriated funds. Subsequently, this individual provided an external threat actor with critical assets: the source code of ShapeShift’s core system, the IP address of the primary server, an SSH private key, and deployed a Remote Access Trojan (RAT) on a colleague’s workstation.
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Summary # BTER, a China-based digital currency exchange, experienced a significant security breach on February 14, 2015, losing 7,170 bitcoins valued at approximately $1.75 million. The attack targeted the exchange’s cold wallets. The company has suspended its services and is collaborating with law enforcement to investigate the incident. BTER has also offered a 720 BTC reward, approximately $170,000, for assistance in recovering the stolen funds.
Attackers # The identity of the hackers who attacked BTER is unknown.
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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.
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Summary # Between 2011 and 2014, Mt. Gox, once the largest Bitcoin exchange, experienced a series of attacks that ultimately led to its downfall. A combination of transaction malleability attacks, poor security practices, and mismanagement resulted in the loss of approximately 850,000 BTC, valued at over $450 million at the time. As a consequence, Mt. Gox filed for bankruptcy, and its CEO, Mark Karpeles, faced legal action.
Attackers # The attacker behind the Mt.
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Summary # In July 2012, BTC-e, a cryptocurrency exchange, experienced a security breach that resulted in the loss of around 4,500 BTC. The hack was enabled by a combination of weak security practices and system vulnerabilities, which allowed the attackers to obtain Liberty Reserve API keys and exploit the deposit algorithm. BTC-e claimed to have compensated affected customers and improved security measures following the attack, resuming normal operations within a few days.
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Summary # On October 5, 2011, Bitcoin7, a cryptocurrency exchange, suffered a security breach that resulted in the loss of approximately 5,000 BTC. The attack was facilitated by a combination of weak security practices and system vulnerabilities, which allowed the attackers to gain unauthorized access to the exchange’s hot wallet. Bitcoin7 claimed to have compensated affected customers and improved security measures following the attack, resuming normal operations within a few days.
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