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Hacked Event Broadcast

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Verified blockchain security incidents with original evidence and historical event dates.

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Historical events use their original event dates. Latest event dates first. Severity follows existing archive classifications.

Jan 16, 2019

3 verified updates
The game playgames has been continuously attacked by malicious user niyoubudou33. It has been attacked 295 times as of press time, which is consistent with the previous attacks on EOS.Win, FarmEOS, idice, LuckBet, GameBet, EOSDice, STACK DICE and many other games.ExpandCollapse

The game playgames has been continuously attacked by malicious user niyoubudou33. It has been attacked 295 times as of press time, which is consistent with the previous attacks on EOS.Win, FarmEOS, idice, LuckBet, GameBet, EOSDice, STACK DICE and many other games.

Amount of loss
2158 EOS
Attack method
Transaction congestion attack
EOS EcosystemSecurity

Jan 15, 2019

2 verified updates
This time the attacker is the same person as the last time. Both flo******now and sil******day are the account of the hacker. The two attack methods are also the same. The attacker points to FarmEOS. After placing a bet, and when the attacking contract receives a transfer notification, a large number of defer transactions are initiated, which delays the subsequent lottery draw of FarmEOS, which is the "transaction crowding attack".ExpandCollapse

This time the attacker is the same person as the last time. Both flo******now and sil******day are the account of the hacker. The two attack methods are also the same. The attacker points to FarmEOS. After placing a bet, and when the attacking contract receives a transfer notification, a large number of defer transactions are initiated, which delays the subsequent lottery draw of FarmEOS, which is the "transaction crowding attack".

Attack method
Transaction congestion attack
OtherSecurity
The attacker made a profit of nearly 2000 EOS through the Dice game by deploying the attack contract flo*****now in just a few minutes.ExpandCollapse

The attacker made a profit of nearly 2000 EOS through the Dice game by deploying the attack contract flo*****now in just a few minutes.

Amount of loss
2,000 EOS
Attack method
Transaction congestion attack
EOS EcosystemSecurity

Jan 14, 2019

1 verified update
The attacker used transaction congestion attack to exploit vulnerability in the old-version BP nodeos.ExpandCollapse

The attacker used transaction congestion attack to exploit vulnerability in the old-version BP nodeos.

Attack method
Transaction congestion attack
OtherSecurity

Jan 13, 2019

5 verified updates
A former employee of the now-defunct Cryptopia exchange allegedly stole more than 250,000 New Zealand dollars (US$182,300) of cryptocurrency and customer data from Cryptopia. However, the New Zealand authorities managed to recover the stolen funds and return them to Cryptopia's liquidator Grant Thornton. The man explained in detail how he stole the funds. He said that he unauthorizedly copied the private keys belonging to Cryptopia's many wallets and saved the data on a USB storage device. Then he uploaded the data to his personal computer at home. This allows him to use thousands of wallets and more than 100 million U.S. dollars in various cryptocurrencies.ExpandCollapse

A former employee of the now-defunct Cryptopia exchange allegedly stole more than 250,000 New Zealand dollars (US$182,300) of cryptocurrency and customer data from Cryptopia. However, the New Zealand authorities managed to recover the stolen funds and return them to Cryptopia's liquidator Grant Thornton. The man explained in detail how he stole the funds. He said that he unauthorizedly copied the private keys belonging to Cryptopia's many wallets and saved the data on a USB storage device. Then he uploaded the data to his personal computer at home. This allows him to use thousands of wallets and more than 100 million U.S. dollars in various cryptocurrencies.

Attack method
Private Key Leakage
ExchangeSecurity
From January 13th to 14th, a huge amount of unauthorized cryptocurrency transfer occurred in Cryptopia, which was suspected of being stolen. On January 15, the exchange posted a tweet claiming that it was hacked and 28,773 ETH was stolen. After that, on January 30th, the exchange experienced another security breach, stolen 1,675 ETH. On May 15, Cryptopia announced that it would enter the liquidation process.ExpandCollapse

From January 13th to 14th, a huge amount of unauthorized cryptocurrency transfer occurred in Cryptopia, which was suspected of being stolen. On January 15, the exchange posted a tweet claiming that it was hacked and 28,773 ETH was stolen. After that, on January 30th, the exchange experienced another security breach, stolen 1,675 ETH. On May 15, Cryptopia announced that it would enter the liquidation process.

Amount of loss
17,500,000
Attack method
Security vulnerabilities
ETH EcosystemSecurity
After the attack contract sil******day places a bet on FarmEOS, and when the attack contract receives a transfer notification, it initiates a large number of defer transactions, which delays the subsequent lottery draw of FarmEOS. The SlowMist security team first two days (1 November 11) disclosed EOS.WIN was attacked in the same wayExpandCollapse

After the attack contract sil******day places a bet on FarmEOS, and when the attack contract receives a transfer notification, it initiates a large number of defer transactions, which delays the subsequent lottery draw of FarmEOS. The SlowMist security team first two days (1 November 11) disclosed EOS.WIN was attacked in the same way

Amount of loss
5,000 EOS
Attack method
Transaction congestion attack
EOS EcosystemSecurity
The attacker used transaction congestion attack to exploit vulnerability in the old-version BP nodeos.ExpandCollapse

The attacker used transaction congestion attack to exploit vulnerability in the old-version BP nodeos.

Attack method
Transaction congestion attack
OtherSecurity
The attacker used deferBomb to exploit vulnerability in the old-version BP nodeos.ExpandCollapse

The attacker used deferBomb to exploit vulnerability in the old-version BP nodeos.

Attack method
Transaction congestion attack
OtherSecurity

Jan 12, 2019

2 verified updates
The attacker launched continuous attacks on the EOS game BetDoge and has successfully profited hundreds of EOS.ExpandCollapse

The attacker launched continuous attacks on the EOS game BetDoge and has successfully profited hundreds of EOS.

Attack method
Unknown
EOS EcosystemSecurity
The attacker loveforlover launched an attack on EOS.WIN and has already made a profit.ExpandCollapse

The attacker loveforlover launched an attack on EOS.WIN and has already made a profit.

Attack method
Transaction congestion attack
EOS EcosystemSecurity

Jan 10, 2019

1 verified update

Jan 6, 2019

1 verified update
The attacker launched a 51% attack through the rental power, and the exchanges such as Gate.io, Yobit, and Bitrue were affected, and after a week, the attacker returned all the ETC.ExpandCollapse

The attacker launched a 51% attack through the rental power, and the exchanges such as Gate.io, Yobit, and Bitrue were affected, and after a week, the attacker returned all the ETC.

Amount of loss
219,500 ETC
Attack method
51% attack
BlockchainSecurity

Jan 4, 2019

1 verified update
Developers have not been able to effectively detect, block, and isolate accounts which is contract high risk or marked as blacklisted.ExpandCollapse

Developers have not been able to effectively detect, block, and isolate accounts which is contract high risk or marked as blacklisted.

Amount of loss
1,262.74 eos
Attack method
transaction congestion attack
OtherSecurity

Jan 1, 2019

2 verified updates
The attacker launched continuous attacks on the EOS BUFF and has successfully profited hundreds of EOS.ExpandCollapse

The attacker launched continuous attacks on the EOS BUFF and has successfully profited hundreds of EOS.

Attack method
Unknown
EOS EcosystemSecurity

Dec 31, 2018

1 verified update
Tron DApp Tronwin is hacked because of overflow and 2 million TRX were stolen.ExpandCollapse

Tron DApp Tronwin is hacked because of overflow and 2 million TRX were stolen.

Amount of loss
2,000,000 TRX
Attack method
Overflow
Tron EcosystemSecurity

Dec 29, 2018

1 verified update

Dec 28, 2018

2 verified updates
The attacker launched an attack on the GameBet game contract gamebetdices, and transfer most of the acquired EOS to the FreeWallet wallet account.ExpandCollapse

The attacker launched an attack on the GameBet game contract gamebetdices, and transfer most of the acquired EOS to the FreeWallet wallet account.

Attack method
Roll back attack
EOS EcosystemSecurity
The attacker continued to attack the LuckyMe game contract luckymedice1 and had benefited thousands of EOS.ExpandCollapse

The attacker continued to attack the LuckyMe game contract luckymedice1 and had benefited thousands of EOS.

Attack method
Roll back attack
EOS EcosystemSecurity