It is said that the technology house changes the world, and the hacker is simply the leader in the technology house. Only a string of code earns a lot of money! As the saying goes, "The thief is not terrible, I am afraid that the thief has a culture." The hacker is a typical representative of the world that has changed his own knowledge.
Let's take a look at some of the more important bitcoin stolen "black history" in the past nine years.
01.Tradefortress - November 2013
In November 2013, according to the Australian Broadcasting Corporation, a local 18-year-old said that his own Bitcoin bank was stolen and lost 4,100 bitcoins worth $1.1 million, but he was worried about losing Bitcoin ownership. I dare not report the case to the police. It is understood that the young man opened a bitcoin bank with his own computer, called "Tradefortress".
02.Mt. Gox - February 2014
Mt. The Gox event is the most notorious event since the birth of Bitcoin. It has a huge impact on the world of cryptocurrency, the value of Bitcoin and people's attitudes towards virtual currency.
In the past four years, Mt. The theft of Gox's more than 850,000 bitcoins has become the headline news of different portals. This incident has also become a major discussion point for the insiders in March. In its heyday of 2013, Mt. Gox was the world's largest exchange, and the exchange was responsible for about 80% of the bitcoin transactions in circulation.
As Cointelegraph pointed out in this short memoir, at the time, a series of events that led to the so-called hacking caused a loss of $4.73 million in bitcoin. The details of the hacking incident are still unclear, but some Mt. Gox’s staff was arrested for alleged misappropriation of public funds.
Although it is time to open old accounts again, it is difficult for people to put Mt. The Gox incident was linked to the hack because Mt at the time. Mark Karpelès, CEO of Gox, was accused of embezzling public funds and fraud for participating in activities related to “loss of fundsâ€, not to mention the various companies associated with the incident that were secretly involved in the disaster.
03.Poloniex - March 2014
In March 2014, the US digital currency exchange Poloniex was stolen and lost 12.3% of bitcoin. The hacker found a loophole in the withdrawal system and stolen Bitcoin. Fortunately, Poloniex immediately discovered and frozen the Bitcoin transaction, which was estimated to cost about $50,000, and the loss was borne by Poloniex.
04.Flexcoin - March 2014
Founded in 2011, Flexcoin claims to be the world's first Bitcoin bank. The station posted an announcement stating that it was attacked on Sunday. The hacker snatched away all 896 bitcoins stored in the hot wallet to CoinDesk today. Based on the published price of $655 bitcoin, Flexcoin lost approximately $587,000. Since Flexcoin did not have the resources or assets to cover this loss, it closed its doors on March 5, 2014.
05.Bitstamp - January 2015
Bitstamp, the world's third-largest bitcoin exchange, lost $5.4 million (33.5 million yuan) of bitcoin in January 2015 due to a hacker attack. Since then, the Slovenian-based company has been forced to stop trading. The attack lost approximately 19,000 bitcoins.
After the Bitstamp hot wallet was compromised, the platform stopped the deposit and withdrawal, and then closed the platform trading. And advise customers not to deposit to the old address.
06. Biter Trading Platform - February 2015
Biter is a Chinese altcoin exchange. Ark coins such as NXT are traded on it. At around 16:34 on the 15th, Biter first sent stolen information on his official Twitter account. Two minutes later, he posted a message on Sina Weibo: Important notice: Just our NXT center account was hacked and hackers stole 50 million NXT, according to the price of each NXT 0.2073 yuan at that time, the total value of these stolen NXT is more than 10 million yuan.
The hacker used the bit to fill the hot wallet from the cold wallet and stolen all the bitcoin in the cold wallet of the BitTrader platform, for a total of 7,170 bitcoins.
07.Bitfinex - August 2016
In August 2016, the largest dollar bitcoin trading platform Bitfinex official website hanged an announcement. Due to a security breach on the website, the bitcoin held by the user was stolen. Then, according to Reuters, the stolen bitcoin totaled 119,756 pieces, the total value. It is about $65 million.
08.Yapizon - April 2017
Yapizon, a well-known cryptocurrency exchange in South Korea, confirmed that hackers have been able to successfully invade their systems and steal more than 3,800 bitcoins (BTC), equivalent to £38,495,15, accounting for about 37% of their total business assets.
Yapizon released an announcement: On the morning of April 22, 2017, hackers hijacked four separate digital wallets. According to the company's statement (via Google Translate), the total loss is 3831 BTC, worth about KRW 5.5 billion.
09.Bithumb - June 2017
Bithumb suffered two hacking attacks in 2017. About 36,000 customers' data were leaked. Among the stolen accounts, 266 accounts were found to be withdrawn, and about 30,000 customers' personal information was leaked. This hacking caused investors to lose billions of won. The company said the hacker wanted to steal Bitcoin from the customer's personal account.
According to reports, South Korea's bitcoin market share is 75.7%, Bithumb is the world's third largest private currency exchange, trading more than 13,000 bitcoins per day, accounting for about 10% of global bitcoin transactions.
10. Mining Server Nicehash - December 2017
Another eye-catching event is the hacking of the mining server Nicehash. At the time, more than 4,000 bitcoins (then worth $63 million) were stolen from Nicehash's wallet by hackers.
However, Nicehash handled the related services after being stolen. A few weeks later, the team's CEO's actions advanced the continued opening of the Nicehash service, and they promised to refund all users affected by cyber theft, beginning in February 2018.
11.Coincheck - January 2018
Let's fast forward to 2018. If we are talking about the value of virtual money stolen by hackers, then this modern hacker deserves to be the largest cryptocurrency hacker in history.
Although it is not clear how the hacking incident happened, it is known that the hacker obtained the private key of the Coincheck online wallet and moved 523 million new coins worth about $500 million. Due to poor security standards, the exchange has kept such a large number of cryptocurrency tokens in a single address, and the exchange has been penalized.
However, unlike Mt. Gox, the exchange quickly took action to reduce losses caused by transaction cancellations after hacking, and ruled out the possibility of using hard forks to reduce damage. At the same time, the exchange also succeeded. A tag system has been created through which they can track the whereabouts of all stolen new coins.
Because cryptocurrencies stolen by hackers are marked, hackers cannot sell or redeem their spoils on different exchanges. In addition, Coincheck vowed to start paying back the user's lost funds, and now they have begun to do so.
12.Bitgrail - February 2018
Bitgrail is another exchange that has recently suffered cyber attacks. The Italian exchange lost 17 million Nano tokens in suspicious circumstances, and the value of these tokens was about $187 million.
Bitcorail founder Francesco Firano believes that the problem stems from Nano's development team and its blockchain, while the Nano team dismissed these claims in an exclusive interview. After the incident, the exchange announced that it would refund the user, but Bitgrail users must sign an agreement that effectively excludes any future legal action against the Italian Stock Exchange.
13. Coin Safety - March 2018
As one of the largest cryptocurrency exchanges, the currency security is a big player who has recently suffered cyber attacks.
Unlike the internal collusion of Mt. Gox and the stolen private key of Coincheck, Binance is somewhat plagued by more complicated operations. However, in any case, the exchange's security system found suspicious activity, and eventually hackers could not steal any tokens.
On March 7, many users began complaining about their illegal accounts on Reddit and social media platforms. According to the coin security team, hackers used the phishing website to hijack the user's login information. As they got enough accounts, they created an API key for user account transactions.
Then on March 7, hackers used the above keys and placed large orders on the VIA/BTC market, pushing up the price of VIA tokens. The hacker transferred the VIA token to 31 specific accounts and sold it at the highest price, moving the bitcoin from the damaged account to the other 31 accounts.
14.MyEtherWallet - April 2018
At midnight on April 23, 2018, users of MyEtherWallet began to notice some strange things. Because the wallet and service need to be connected, the user will see an unsigned SSL certificate, which is an incomplete link on the website's verification. This is unusual, but in the face of this, netizens often think about directly clicking on the link.
But anyone who clicks on this certificate warning is redirected to a Russian server, which will start emptying the user's wallet. From the wallet activity, the attacker took at least $13,000 in Ethereum within two hours of the attack being stopped, and the attacker's wallet had already stored more than $17 million in Ethereum.
MyEtherWallet confirmed the attack in a Reddit statement, and most of the affected users use Google's 8.8.8.8 DNS service. However, since Google's services are recursive, it is likely to get a bad list by spoofing communication with Amazon's "Route 53" system ("Route 53").
So far, MyEtherWallet is the only server that has been confirmed to be under attack.
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