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Ankr Protocol suspends trading following $5 million DeFi exploit

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Web3 infrastructure provider Ankr Protocol has become the latest platform to fall victim to decentralized finance (DeFi) exploit. The exploit on the BNB chain-based DeFi protocol earlier on 2 December led to the loss of tokens worth several million dollars. 

Blockchain analytics firm PeckShield was the first one to shed light on the exploit. Citing data from Etherscan, PeckShield reported that the perpetrator had minted “tons of aBNBc” and sent them to various mixer services. 

20 trillion aBNBc dumped on PancakeSwap

On-chain analytics outfit Lookonchain later published a detailed report, which revealed that the exploiter minted a whopping 20 trillion aBNBc tokens and dumped them on PancakeSwap. 

According to data from Etherscan, the exploited tokens have since been sent to Tornado Cash, Uniswap, 1inch, and various bridges, including Celer bridge and debridge, in order to swap and obscure the trail. The perpetrator netted more than $5 million from this exploit. They also made away with an additional 900 BNB worth almost a quarter million dollars.

A vulnerability in Ankr Protocol’s smart contract is believed to be the reason for this exploit. On-chain experts on Twitter have speculated that compromised private keys may also be responsible for this. 

Ankr Protocol responded to the exploit

Through a statement on Twitter, Ankr Protocol informed their community that they had suspended trading while the problem was being worked on. They clarified,

“All underlying assets on Ankr Staking are safe at this time, and all infrastructure services are unaffected.”

Furthermore, the Ankr team asked liquidity providers to remove liquidity from decentralized exchanges, while stating that they will re-issue aBNBc. It is interesting to note that the protocol had announced an update to its reward-bearing and earning token models just hours before the exploit. 

aBNBc lost over 99% of its value since the news. The token was trading at $303 before the exploit and, at press time, it was worth just $1.50. Ankr Protocol’s native token ANKR also tanked by almost 6%. 


Saman Waris works as a News Editor at AMBCrypto. She has always been fascinated by how the tides of finance and technology shape communities across demographics. Cryptocurrencies are of particular interest to Saman, with much of her writing centered around understanding how ideas like Momentum and Greater Fool theories apply to altcoins, specifically, memecoins. A graduate in history, Saman worked the sports beat before diving into crypto. Prior to joining AMBCrypto 2 years ago, Saman was a News Editor at Sportskeeda. This was preceded by her stint as Editor-in-Chief at EssentiallySports.
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