Wasabi Protocol Loses $4.5 Million Due to Compromised Admin Key

The DeFi sector continues to experience significant financial losses, with Wasabi Protocol being the latest victim. The platform, which operates as a perpetuals trading platform on Ethereum and Base, was drained of approximately $4.55 million on Thursday following a compromise of its deployer key, according to security firm Blockaid. This incident is the latest in a series of DeFi losses, which have exceeded $605 million across at least 12 incidents this month. The attack bears a striking resemblance to the Drift Protocol exploit, where North Korea-linked attackers used a compromised admin key to drain $285 million from the Solana-based perpetuals exchange. The hack was carried out through an externally owned account called wasabideployer.eth, which held the sole ADMIN_ROLE in Wasabi's permission system. Once the attacker gained access to the deployer key, they granted themselves admin privileges without delay by calling grantRole on the permission contract. A helper contract was then used to upgrade Wasabi's perp vaults and Long Pool to malicious implementations, resulting in the draining of balances. The exploit relied on the Universal Upgradeable Proxy Standard (UUPS), which allows a smart contract to change its underlying code while retaining the same address. UUPS is widely used due to its ability to allow developers to fix bugs without migrating users. However, if an attacker gains control of admin permissions, they can replace the contract's logic with malicious code designed to steal funds. Wasabi lacked a timelock or multisig to protect 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 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 month has seen a series of exploits, including the Drift Protocol breach, where attackers exploited a single-key admin setup with no governance timelock. Kelp DAO also lost $292 million when an attacker exploited a single-verifier configuration in the protocol's LayerZero bridge. The cumulative DeFi loss total for 2026 has now exceeded $770 million across more than 30 reported incidents, with April accounting for the majority of that figure. Smaller breaches this month have included CoW Swap, Grinex, Resolv Labs, and Volo Protocol, among others. A common thread among these incidents is not a new vulnerability, but rather the same post-mortem language about lessons learned, while the next exploit often occurs before those lessons are implemented. Wasabi Protocol has not yet issued a public statement regarding the incident.