Echo Protocol Exploited for $76.7M in Admin Key Hack

Echo Protocol, a Bitcoin-focused DeFi platform working on the Monad blockchain, was exploited for $76.7 million in artificial Bitcoin (eBTC) following an admin key compromise. The assault, reported on Could 18, allowed the hacker to mint 1,000 unauthorized eBTC tokens and siphon a portion of the stolen funds via Twister Money, a privacy-focused mixing service.

Blockchain safety corporations PeckShield and Lookonchain recognized that 45 eBTC—roughly $3.45 million—was used as collateral on Curvance, a DeFi lending protocol. The attacker borrowed 11.3 wrapped Bitcoin (wBTC) value $868,000, bridged the tokens to Ethereum, and transformed them into ETH earlier than routing $822,000 in ETH via Twister Money. Regardless of these efforts to obscure fund flows, the hacker nonetheless holds 955 eBTC, valued at about $73 million as of Bitcoin’s present worth of $76,841.

Root Trigger: Admin Key Vulnerabilities

Blockchain developer “Marioo” revealed the exploit stemmed from an administrative personal key compromise somewhat than a wise contract flaw. The attacker exploited inadequate safety measures, together with the absence of multi-signature safety, timelocks, or minting limits on the eBTC contract. These operational lapses allowed the hacker to mint new tokens unchecked.

Echo Protocol has suspended all cross-chain exercise on its platform and said it’s actively investigating the breach. The Monad blockchain itself, in line with Monad co-founder Keone Hon, stays unaffected and continues to function usually.

Rising Tide of DeFi Exploits in 2026

The Echo Protocol hack is the newest in a string of decentralized finance (DeFi) assaults this 12 months. A minimum of 12 protocols have been compromised in Could alone, underscoring persistent vulnerabilities in token minting, collateral manipulation, and cross-chain processes. Notable incidents embrace the Drift Protocol and Kelp DAO exploits, which resulted in losses exceeding $285 million and $292 million, respectively.

Echo’s exploit additionally highlights a troubling sample: the usage of DeFi infrastructure to launder stolen funds. By leveraging platforms like Curvance, attackers can convert ill-gotten belongings into different tokens and obscure their path utilizing mixers like Twister Money.

Market and Safety Implications

This assault coincides with Bitcoin buying and selling at $76,841, down 0.17% previously 24 hours. Whereas the worth affect of this particular exploit seems muted, the broader development of DeFi hacks has raised issues amongst business members. The absence of stricter operational controls—akin to multi-sig wallets and minting price limits—continues to pose dangers for platforms managing large-scale liquidity.

For merchants, the Echo Protocol breach serves as one other reminder of the dangers related to DeFi tokens. Buyers in eBTC and associated belongings ought to monitor updates from Echo Protocol’s workforce and assess potential impacts on liquidity and belief within the platform.

As investigations proceed, Echo Protocol has dedicated to offering updates via its official channels. The incident stays a stark warning for DeFi protocols: operational safety is simply as vital as technical innovation.

Picture supply: Shutterstock