On August 10, 2021, the cross-chain interoperability protocol Poly Network was attacked by hackers.
On Thursday evening, Poly Network was attacked, and a total of more than 610 million US dollars were transferred to 3 addresses, Poly Network said. The impact caused the transfer of large assets of the O3 Swap cross-chain pool.
“ We are sorry to announce that #PolyNetwork was attacked on @BinanceChain @ethereum and @0xPolygon Assets had been transferred to hacker’s following addresses, “ Poly Network announced via its Twitter handle.
According to Poly Network, the SlowMist security team immediately cut into the analysis and shared the analysis results.
Through on-chain and off-chain tracking, SlowMist says that they have identified the attacker’s mailbox, IP address, and device fingerprints. The blockchain security company also highlights that the attacker initially used Monero (XMR), which were later exchanged for Binance Coin (BNB), Ethereum (ETH) and Polygon (MATIC). According to SlowMist, the three crypto assets were used to fund the hack.
In a letter addressed to the hacker, Poly Network urges the cybercriminal to return the stolen funds.
“The amount of money you hacked is the biggest one in DeFi industry. Law enforcement in any country will regard this as a major economic crime and you will be pursued…
You should talk to us to work out a solution.”
Poly Network urged other members of affected blockchain and crypto exchanges to blacklist tokens coming from addresses used by the attackers.
Following the hack, as of 11 Aug 04:18:39 PM +UTC Wednesday, Poly Network said that the hacker deposited $260 million US dollars in their established addresses to which it said the hacker could return the money.
$260 million (As of 11 Aug 04:18:39 PM +UTC) of assets had been returned: Ethereum: $3.3M BSC: $256M Polygon: $1M The remainings are $269M on Ethereum, $84M on Polygon.
The motive behind the hack and the reason the money is being returned is unknown.
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