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# Poly Network loses over $600 million in what could be the biggest DeFi hack ever
- URL: https://btcpeers.com/poly-network-loses-over-600-million-in-what-could-be-the-biggest-defi-hack-ever-2/
- Published: 2021-08-10T18:54:41.000Z
- Updated: 2023-09-24T15:44:05.000Z
- Author: John Williams
- Tags: News, #saudu, #Import 2025-12-27 14:07

Cross-chain decentralized finance protocol Poly Network has suffered a $600 million exploit in what could go down in history as one of the biggest hacks ever.

> Important Notice:  
> We are sorry to announce that #PolyNetwork was attacked on @BinanceChain @ethereum and @0xPolygon Assets had been transferred to hacker's following addresses:  
> ETH: 0xC8a65Fadf0e0dDAf421F28FEAb69Bf6E2E589963  
> BSC: 0x0D6e286A7cfD25E0c01fEe9756765D8033B32C71
> 
> — Poly Network (@PolyNetwork2) August 10, 2021

The attack, which is the latest in a string of DeFi exploits, is the largest so far. It has broken the previous $530 million record held by [crypto](https://btcpeers.com/what-is-the-best-cryptocurrency-to-invest-in/) exchange Coincheck from January 2018.

The stolen funds were transferred to addresses on the Ethereum, Binance Smart Chain, and Polygon blockchains. Furthermore, Poly Network’s support for blockchain interactivity has made it difficult to assess the full scope of the attack. In the meantime, the network has advised miners and exchanges to blacklist accounts linked to the attacker.

Several crypto projects have taken steps to stop the attack from affecting them. For instance, the Japanese protocol O3 Swap has suspended its cross-chain functionality due to the hack. Similarly, the CTO of Tether Paolo Ardoino announced that his firm has frozen assets worth $33 million that are linked with Poly Network

> . @Tether\_to just froze \~33M $USDt on 0xC8a65Fadf0e0dDAf421F28FEAb69Bf6E2E589963 as part of the #PolyNetwork hack https://t.co/EviPTAkQJD
> 
> — Paolo Ardoino (@paoloardoino) August 10, 2021

Meanwhile, the Poly Network team is looking to take legal action in a bid to recover whatever it can.

Poly Network has joined the growing list of DeFi protocols that have been hit by hackers this year.