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Echo Protocol Investigates Security Incident on Monad Bridge, Suspends Cross

En.Bloomingbit • May 19, 2026

Echo Protocol, a decentralized finance project on Monad, said it is investigating a security incident involving its bridge.

In a post on X on May 18, the project said the incident occurred on the Monad-based Echo Bridge. All cross-chain transactions have been suspended while the investigation continues.

Echo Protocol added that it will provide updates through its official channels as more information becomes available.

Earlier, Onchain Lens, citing DeFi analyst dcfgod, reported that 1,000 eBTC had been minted without authorization on Echo Protocol and that the tokens appeared to have been used to steal funds. The losses are currently estimated at $76.7 million.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Echo Protocol Exploit Results in $76M Loss Due to Compromised Admin Key On May 19, 2026, Echo Protocol, a Bitcoin DeFi platform, suffered a significant exploit on the Monad blockchain, leading to the unauthorized minting of 1,000 eBTC valued at approximately $76 million. The breach was attributed to a compromised admin key, allowing the attacker to mint and subsequently launder around $816,000 through Tornado Cash. The hacker deposited 45 eBTC worth $3.45 million into the lending platform Curvance, borrowed 11.29 WBTC, and converted it to ETH. Echo Protocol confirmed that the Monad network itself was not compromised, and they have regained control of the admin keys and burnt the remaining eBTC held by the attacker. The incident has prompted Echo Protocol to suspend all cross-chain transactions and enhance security measures. The attack reflects ongoing vulnerabilities in DeFi protocols, particularly concerning centralized key management. 12 sources 68

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Echo Protocol