DeFi

Sonne Finance Suffers $20 Million Hack

Summary # On May 14, 2024, Sonne Finance was exploited on the Optimism chain, which led to a loss of nearly $20 million worth of assets including USDC, WETH and VELO. Sonne Finance is a decentralized liquidity protocol that offers Lending, Borrowing and Earning opportunities on Optimism and Base chains. The root cause of the exploit is a precision loss smart contract vulnerability. Sonne Finance’s smart contracts are a fork of CompoundV2, and precision loss vulnerability is a well-known issue with them. ...

Pike Finance exploited for $1.7 million in second incident

Summary # On April 30, 2024, Pike Finance, a Cross-chain Bridge and a Lending Protocol for native assets, was exploited across the Ethereum, Optimism, and Arbitrum chains due to a smart contract vulnerability. $1.7 million worth of assets was siphoned out from the protocol. The smart contract storage misalignment issue was utilized, whith allowed the attacker to bypass owner permissions. Initially, the protocol was exploited four days before the incident, which led to a loss of nearly $300,000 and a temporary pause of operations. ...

The WOOFi suffered a flash loan exploit on Arbitrum

Summary # On March 5th, WOOFi Swaps’ sPMM algorithm was exploited on the Arbitrum network. The attacker used a sequence of flash loans to manipulate the price of the WOO token due to low liquidity. The¬†exploit occurred due to a combination of the sPMM algorithm vulnerability, incorrect price adjustment, and a failure in the fallback check mechanism. The attacker was able to use flash loans to manipulate the price of WOO and drain funds from the affected pool. ...

Affine Protocol Exploit: A $88,000 Loss Due to Smart Contract Flaw

Summary # Affine Protocol, a provider of cross-chain investment and savings solutions on the Ethereum Mainnet, suffered a significant exploit on February 1, 2024, resulting in a loss of $88,000. The incident was traced to a smart contract vulnerability involving insufficient user data validation. The attacker exploited a flash loan callback function in the strategy contract, manipulating it to liquidate its position and redirect funds. Affine Protocol deployed enhanced security protocols, including stricter access controls and rigorous validation processes for user inputs and transactions, and developed a remediation plan to compensate affected users. ...

Abracadabra Money Suffers $6.5 Million Loss Due to Smart Contract Exploit

Summary # Abracadabra Money, a prominent leverage and lending platform in the DeFi space, was exploited on January 30, 2024, due to a smart contract vulnerability on the Ethereum Mainnet. This exploit led to the unauthorized borrowing and subsequent theft of assets, totaling over $6.5 million, including 1800 ETH and 2.2 million MIM tokens. The attacker exploited the contract’s inability to accurately track the real amount of debt due to rounding errors. ...

Radiant Capitale Suffers $4.6 Million Loss

Summary # On January 2, 2024, Radiant Capital on the Arbitrum Chain suffered a $4.6 million loss from a sophisticated exploit, involving 1902 ETH, due to a smart contract vulnerability. The attack was orchestrated by utilizing flash loans to inflate the USDC reserve liquidity index on the platform artificially. This enabled the attacker to borrow excessive WETH against the artificially high collateral value. The situation was exacerbated by a rounding error within the contract’s calculations, allowing the attacker to manipulate deposit and withdrawal transactions cleverly. ...

Orbit Bridge Suffers $81.54 Million Security Breach

Summary # On December 31, 2023, Orbit Chain, a South Korean cross-chain project, experienced a significant security breach involving their Orbit Bridge. The attacker exploited the Orbit Bridge through a private key compromise and drained approximately $81.54 million worth of assets from the Orbit Bridge’s ETH Vault. The stolen funds were converted into ETH and DAI and then distributed across several addresses. Attackers # The identity of the attacker remains unknown. ...

Telcoin Suffers $1.2 Million Security Breach

Summary # On December 25, 2023, Telcoin, experienced a security breach due to incorrect initialization of wallet contracts, which resulted from a mismatch between the actual implementation of the wallet and the corresponding proxy server, the attacker was able to transfer $TEL from user wallets for $1.2 million. Attackers # The identity of the hackers who attacked Telcoin is unknown. Hacker ETH Wallets: 0x35d2775e5f95596509951b140d68fc5b9185ff98 0xdb4b84f0e601e40a02b54497f26e03ef33f3a5b7 Losses # Telcoin estimated the losses from the hack to be $1. ...

Pine Protocol Suffers $92,000 Security Breach

Summary # Pine Protocol, a decentralized, non-custodial asset-backed lending platform, suffered a security breach on December 21, 2023, due to a vulnerability in its smart contract on the Ethereum Mainnet. This exploit resulted in a loss of approximately 40 ETH ($92,000), exploiting the protocol across multiple transactions. The attack was facilitated by a flaw related to shared pools between two different contracts within the platform. Attackers # The identity of the attacker is unknown. ...

Coordinated Attacks Result in $113.3 Million in Losses for Heco Bridge and HTX Exchange

Summary # On November 22, 2023, Heco Bridge and HTX Exchange were victims of cyberattacks, resulting in over $113.3 million in losses. The attacks appear coordinated and carried out by the same attacker based on similar exploitative techniques and the connection between the two targets. Blockchain security firms CertiK, Peckshield, and Cyvers have reported over $86.6 million in digital assets losses for Heco Bridge and $13.6 million in losses for HTX. ...