Poly Network Hack

    Earlier this month, cryptocurrency experienced the largest hack which costed around $600M USD when cross-chain DeFi site Poly Network got hacked. Poly Network operates on Polygon, Ethereum and BSC network. The attack occurs on all three network. The hacker has been seen to try to move funds from his Polygon wallet to Poly Network wallet. So, let's see the transactions involving address 0x5dc3603c9d42ff184153a8a9094a73d461663214 which has been identified to be the hacker's Polygon address.

    At 6.04PM, the hacker transferred $85.09M USDC (two transactions containing 85.09M USDC and 100 USDC) from the Poly Network project’s smart contracts at Polygon to his Polygon address. (tx_id = 0x1d260d040f67eb2f3e474418bf85cc50b70101ca2473109fa1bf1e54525a3e01 & 0xfbe66beaadf82cc51a8739f387415da1f638d0654a28a1532c6333feb2857790)

    The contract involved in Polygon is 0xABD7f7B89c5fD5D0AEf06165f8173b1b83d7D5c9 which is an Eth Cross Chain Manager.

    We also can see that the hacker sent 100 USDC, 10,000 USDC, 1,000,000 USDC and finally 84,079,620 USDC to address: 0xa4b291ed1220310d3120f515b5b7accaecd66f17 which was set-up by Poly Network team for the hacker to return the fund. He returned all funds siphoned on Polygon Network. This is mostly due to pressure from multiple parties including when Tether froze the USDT stolen.

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