SlowMist April Security Report| Web3 Security Incidents Result in Approximately $90.81 Million in Losses

5 min readApr 30, 2024



In April 2024, there were a total of 37 security incidents, resulting in approximately $90.81 million in losses. Based on the data from the SlowMist Blockchain Security Incident Database , these incidents were caused by contract vulnerabilities, third-party vulnerabilities, exit scams, and hacked accounts.

Key Incidents


On April 1, 2024, the DeFi protocol OpenLeverage was attacked, resulting in losses of approximately $260,000. OpenLeverage has stated that its protocol’s insurance, OLE buyback fund, and protocol reserve will be used to compensate for all protocol losses.


On April 2, 2024, the decentralized exchange FixedFloat was attacked, resulting in losses of approximately $3 million. Attackers exploited vulnerabilities in a third-party service used by FixedFloat. FixedFloat has stated that neither company nor user funds were affected by this attack.


On April 4, 2024, CondomSOL on Solana exit scammed, with wallets associated with CondomSOL raising 4965 SOL, approximately $920,000. Currently, its official Twitter account has been deleted.

Zest Protocol

On April 12, 2024, the Bitcoin-native lending protocol Zest Protocol tweeted that it had been attacked. Attackers lent out more than the value of their collateral by increasing the collateral value. They removed 324,000 STX (approximately $1 million) from the protocol. Zest Protocol stated that this loss would be compensated by the protocol treasury, ensuring full reimbursement for users.

Grand Base

On April 15, 2024, the Grand Base project, built on the Base layer-two blockchain, tweeted that the deployer’s wallet had been compromised. This allowed attackers to drain the project’s liquidity pool, resulting in a total theft of 615 ETH (approximately $2 million). On April 20, Grand Base announced that during the token redeployment process, the team had recovered veNFTs from the attacked address and transferred them to a multisig wallet. These veNFT positions, valued at $225,000, will be used to provide liquidity when appropriate.

Hedgey Finance

On April 19, 2024, Hedgey Finance was attacked due to contract vulnerabilities, resulting in total losses of approximately $47.7 million, with the majority occurring on the Arbitrum network.


Recently, users reported on Twitter that the decentralized betting platform ZKasino had removed the “Ethereum will be returned and can be bridged back” message from its Bridge funds interface, preventing users from withdrawing. ZKasino is suspected of being an exit scam, causing losses of approximately $33 million.

Pike Finance

On April 26, 2024, the cross-chain lending protocol Pike Finance’s USDC pool on Pike Beta was attacked, resulting in losses of approximately $300,000. The fundamental cause of this incident was attackers forging CCTP messages, leading to the loss of USDC on Ethereum, Arbitrum, and Optimism chains.


Of the 37 reported security incidents this month, 15 were due to exit scams by project teams, accounting for 40.54% of the total incidents. These exit scam incidents resulted in losses of approximately $37.57 million, representing 41.4% of the total stolen amount this month. The SlowMist security team advises users to thoroughly research the background and team of projects before investing.

This month, 10 incidents of contract vulnerability exploitation resulted in losses of approximately $46.93 million, accounting for 51.7% of the total stolen amount this month. The SlowMist security team advises project teams to remain vigilant and conduct regular security audits to track and address new security threats and vulnerabilities, thereby maximizing project and asset security.

Finally, the events documented in this article are the major reported security incidents of the month, and incidents regarding individual users were not included in the statistics. For additional updates, please visit the SlowMist Blockchain Security Incident Database.

About SlowMist

At SlowMist, we pride ourselves on being a frontrunner in blockchain security, dedicating years to mastering threat intelligence. Our expertise is grounded in providing comprehensive security audits and advanced anti-money laundering tracking to a diverse clientele. We’ve established a robust network for threat intelligence collaboration, positioning ourselves as a key player in the global blockchain security landscape. We offer tailor-made security solutions that span from identifying threats to implementing effective defense mechanisms. This holistic approach has garnered the trust of numerous leading and recognized projects worldwide, including names like Huobi, OKX, Binance, imToken,, Amber Group, Klaytn, EOS, 1inch, PancakeSwap, TUSD, Alpaca Finance, MultiChain, and Cheers UP. Our mission is to ensure the blockchain ecosystem is not only innovative but also secure and reliable.

We offers a variety of services that include but are not limited to security audits, threat intelligence, defense deployment, security consultants, and other security-related services. We also offer AML (Anti-money laundering) solutions, Vulpush (Vulnerability monitoring) , SlowMist Hacked (Crypto hack archives), FireWall.x (Smart contract firewall) , Safe Staking and other SaaS products. We have partnerships with domestic and international firms such as Akamai, BitDefender, FireEye, RC², TianJi Partners, IPIP, etc.

By delivering a comprehensive security solution customized to individual projects, we can identify risks and prevent them from occurring. Our team was able to find and publish several high-risk blockchain security flaws. By doing so, we wish to help spread awareness and raise the security standards in the blockchain ecosystem.

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SlowMist is a Blockchain security firm established in 2018, providing services such as security audits, security consultants, red teaming, and more.