Decentralized exchange Bunni loses an estimated $8.4 million in smart contract exploit

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Quick Take

  • Decentralized trading platform Bunni suffered an $8.4 million exploit earlier today, according to multiple onchain analysts.
  • The team traced the matter to a security issue and paused the protocol to stem losses.

Decentralized trading platform Bunni lost about $8.4 million worth of funds due to an exploit, with roughly $6 million drained on Unichain and $2.4 million on Ethereum, onchain security firm Hacken reported on Tuesday.

The exploit targeted security vulnerabilities in Bunni’s Ethereum-based smart contracts, although the specific techniques used by the attackers have not been fully reported.
 
About half of the Unichain haul was swapped to ether and bridged to Ethereum in a series of 100 ETH transfers via Across Protocol, onchain data shows.

"If you have money on [Bunni], remove it ASAP," wrote X user @Psaul26ix, who is a core contributor at Bunni. 

Bunni is a DEX built on Uniswap V4 that optimizes liquidity provider returns through the use of adaptive pools and incentive tokens. 

Following reports of the exploit, the platform acknowledged the incident at 3:04 a.m. in a post on social media platform X.

"The Bunni app has been affected by a security exploit," the platform said. "As a precaution, we have paused all smart contract functions on all networks. Our team is actively investigating and will provide updates soon."

In a follow-up notice, Bunni said only two pools appear affected by the exploit, namely the USDC/USDT pair on Ethereum mainnet and the ETH/weETH pair on Unichain. All Bunni deployments remain paused as the team continues to investigate.

Updated with a revised exploit amount and the latest announcement from Bunni's team on X.


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AUTHOR

Danny Park is an East Asia reporter at The Block writing on topics including Web3 developments and crypto regulations in the region. He was formerly a reporter at Forkast.News, where he actively covered the downfall of Terra-Luna and FTX. Based in Seoul, Danny has previously produced written and video content for media companies in Korea, Hong Kong and China. He holds a Bachelor of Journalism and Business Marketing from the University of Hong Kong.

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AUTHOR

Naga joined The Block with over four years of crypto-reporting experience as a Lagos-based News Generalist and Markets Reporter. Previously at crypto dot news, Ethereum World News, and The San Fransisco Tribe, he's interviewed CEOs and industry experts, broke stories, and survived the FTX crash. He's a Digital Media and Journalism alumnus of the University of Lagos. You can send Naga scoops and intel via @shogunaga on Telegram.

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To contact the editor of this story: Vishal Chawla at [email protected]

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