Wasabi Protocol Loses $4.5 Million Due to Alleged Admin Key Breach

The DeFi 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 is the latest in a string of DeFi losses, which have exceeded $605 million across 12 incidents this month. The attack closely mirrors the Drift Protocol exploit, where attackers used a compromised admin key to drain $285 million from the Solana-based exchange. The breach occurred 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 then upgraded Wasabi's perp vaults and Long Pool to malicious implementations, draining the balances. The exploit relied on the Universal Upgradeable Proxy Standard, which allows a smart contract to change its underlying code while maintaining the same address. However, this standard's downside is that if an attacker controls 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 with full control over the protocol. As a result, users holding Wasabi LP tokens were advised to revoke any active approvals to the vault contracts, as the underlying assets had either been drained or remained at risk. This incident is part of a larger trend, with DeFi losses surpassing $770 million across over 30 reported incidents in 2026, with April accounting for the majority of these losses.