Wasabi Protocol Loses $4.5 Million Due to Compromised Admin Key

The decentralized finance sector continues to hemorrhage funds, with Wasabi Protocol being the latest victim. On Thursday, the platform, which offers perpetual trading on Ethereum and Base, was drained of approximately $4.55 million after its deployer key was compromised, according to security firm Blockaid. This incident marks the latest in a series of DeFi breaches, which have resulted in over $605 million in losses across at least 12 incidents this month alone. The attack bears a striking resemblance to the Drift Protocol exploit, where North Korea-linked attackers utilized a compromised admin key to siphon off $285 million from the Solana-based perpetuals exchange on April 1. The mechanics of the attack involved an externally owned account called wasabideployer.eth, which held the sole ADMIN_ROLE in Wasabi's permission system. By gaining access to the deployer key, the attackers were able to grant themselves admin privileges without any delay by calling grantRole on the permission contract. Subsequently, they upgraded Wasabi's perp vaults and Long Pool to malicious implementations that drained the balances, as reported by Blockaid. The exploit leveraged the Universal Upgradeable Proxy Standard (UUPS), a widely used standard that allows smart contracts to modify their underlying code while retaining the same address. Although UUPS enables developers to fix bugs without migrating users, it also poses a significant risk if an attacker gains control of admin permissions, as they can replace the contract's logic with malicious code designed to steal funds. Notably, Wasabi lacked a timelock or multisig to safeguard the admin role, leaving a single key in control of the protocol. Blockaid's exploit detection system identified the ongoing admin-key compromise exploit on Wasabi Protocol across both Ethereum and Base. The compromised contracts include Wasabi's wWETH, sUSDC, wBITCOIN, wPEPE, and Long Pool vaults on Ethereum, as well as its sUSDC, wWETH, sBTC, sVIRTUAL, sAERO, and sBRETT vaults on Base. Users holding Wasabi LP tokens were advised to revoke any active approvals to the vault contracts, as the underlying assets backing those tokens had either been drained or remained at risk. This incident is part of a larger trend, with the cumulative DeFi loss total for 2026 exceeding $770 million across more than 30 reported incidents. April alone accounts for the majority of this figure, with smaller breaches hitting CoW Swap, Grinex, Resolv Labs, and Volo Protocol, among others. A common thread among these incidents is the exploitation of known vulnerabilities, with each producing similar post-mortem analyses about lessons learned, yet the next exploit often occurs before these lessons can be implemented. Wasabi has not yet issued a public statement regarding the incident.