Remitano suffered a $2.7M loss due to a private key compromise.
GAMBL’s recommendation system was exploited.
DAppSocial lost $530K due to a logic vulnerability.
Rocketswap’s private keys were inadvertently deployed on the server.
Hacks
Hacks Analysis
Huobi | Amount Lost: $8M
On September 24th, the Huobi Global exploit on the Ethereum Mainnet resulted in a $8 million loss due to the compromise of private keys. The attacker executed the attack in a single transaction by sending 4,999 ETH to a malicious contract. The attacker then created a second malicious contract and transferred 1,001 ETH to this new contract. Huobi has since confirmed that they have identified the attacker and has extended an offer of a 5% white hat bounty reward if the funds are returned to the exchange.
On September 12th, the CoinEx exploit on multiple chains resulted in a $54M loss. The root cause of this exploit was the compromise of private keys. The attacker drained funds in various tokens, including 11M ETH, 204K BKK, 137M TRX, 29K BNB, and many more across multiple chains including BSC, Arbitrum, and Optimism. The CoinEx team acknowledged the exploit and temporarily suspended all transactions. The team confirmed that all affected users would be fully reimbursed.
On September 10th, the BFCToken exploit on the BNB chain resulted in a $38K loss due to a price manipulation vulnerability. The root cause was a vulnerability in the private _transfer() function within the BFCToken contract. This function burned BFC tokens whenever triggered. The attacker exploited this by burning tokens, artificially reducing the total supply, and inflating the token price. The attacker then sold the BFC tokens for profit and converted the funds into ETH on PancakeSwap.
Exploit Contract (on BNB Chain): 0x595eac4A0CE9b7175a99094680fbe55A774B5464
On September 5th, the FloorDAO exploit on the Ethereum Mainnet resulted in $16K due to a logic vulnerability. The root cause was a vulnerability in the stake() function within the FloorDAO contract which is forked from Olympus DAO. Instead of sending the funds to the intended warmupContract, the stake() function mistakenly sent the funds to the caller. The attacker was able to exploit this logic vulnerability by calling the stake() and unstake() functions multiple times within the same transaction, making a profit.
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Follow-up: Conduct a follow-up review to ensure that the remediation steps were effective and that the smart contract is now secure.
Follow-up: Conduct a follow-up review to ensure that the remediation steps were effective and that the smart contract is now secure.
In Brief
Remitano suffered a $2.7M loss due to a private key compromise.
GAMBL’s recommendation system was exploited.
DAppSocial lost $530K due to a logic vulnerability.
Rocketswap’s private keys were inadvertently deployed on the server.
Hacks
Hacks Analysis
Huobi | Amount Lost: $8M
On September 24th, the Huobi Global exploit on the Ethereum Mainnet resulted in a $8 million loss due to the compromise of private keys. The attacker executed the attack in a single transaction by sending 4,999 ETH to a malicious contract. The attacker then created a second malicious contract and transferred 1,001 ETH to this new contract. Huobi has since confirmed that they have identified the attacker and has extended an offer of a 5% white hat bounty reward if the funds are returned to the exchange.
