The Unichain-based decentralized exchange is the latest to fall victim to a multi-million-dollar exploit.
Bunni, a Unichain-based decentralized exchange, suffered a multi-million-dollar hack early on Tuesday, Sept. 2.
According to an X post by the blockchain security firm Hacken, the DEX, which is powered by Uniswap V4, lost $8.4 million to hackers.
🚨 Alert 🚨@bunni_xyz has suffered an $8.4M exploit on Unichain ($6M) and Ethereum ($2.4M).
Currently, half of the stolen funds on Unichain were swapped to ETH and bridged to Ethereum in 100 ETH bridge txs via Across Protocol. Attack txs below 👇 pic.twitter.com/ePyGiFfcHN
— Hacken🇺🇦 (@hackenclub) September 2, 2025
Attackers stole Ethereum ETH $4 322 24h volatility: 0.2% Market cap: $522.07 B Vol. 24h: $32.85 B , USDC USDC $1.00 24h volatility: 0.0% Market cap: $72.14 B Vol. 24h: $15.24 B , and USDT USDT $1.00 24h volatility: 0.0% Market cap: $168.03 B Vol. 24h: $93.99 B via the layer-2 Unichain and the Ethereum network.
Hacken wrote that all of the Unichain-based funds have already been swapped to ETH tokens in multiple ~100 ETH transactions via the cross-chain bridge Across Protocol.
Nearly an hour after the incident, the exchange announced on its X that all smart contracts have been paused on “all networks.”
🚨 The Bunni app has been affected by a security exploit. As a precaution, we have paused all smart contract functions on all networks. Our team is actively investigating and will provide updates soon. Thank you for your patience.
— Bunni (@bunni_xyz) September 2, 2025
Bunni operates on Unichain, Ethereum, Arbitrum, Base and BNB Smart Chain.
According to DefiLlama data, the decentralized protocol has $50.6 million in total value locked. Unichain and Ethereum, each with a TVL of $32.8 million and $17.4 million, have the major share.
Crypto hacks have seen a notable rise over the past three months again. Coinspeaker reported that August saw over $163 million lost to fraudulent actors, marking the third consecutive monthly spike in exploits.
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