Blockchain site Poly Network has lost around USD 600 million in cryptocurrencies in what could be the largest crypto hack so far. The company on Twitter urges the hackers to “establish communication and return the hacked assets”. Later in the day, the hackers started returning millions to Poly’s digital wallets.
Poly said a preliminary investigation found a hacker exploited a “vulnerability between contract calls”. The company was reported to have confirmed offering the hackers a “bug bounty” of USD 500 000. The confirmation was made when the hackers had started returning the loot.
It urged exchanges to block deposits of the coins, after millions of dollars in tokens were transferred to separate cryptocurrency wallets.
In a letter on Twitter, Poly wrote:
Cross-chain solutions are crucial to the sustainability of Web3!
Instead of exploiting, become a #whitehat #hacker, as you’re important to the future of decentralization for making it more secure and to increase mass acceptance of #blockchain & #crypto!#hackforgood https://t.co/xZjpQuPcRo
— flux.01 (@zero1_flux) August 11, 2021
Poly Network says it is ”built to implement interoperability between multiple chains in order to build the next generation internet infrastructure.”
”Authorized homogeneous and heterogeneous public blockchains can connect to Poly Network through an open, transparent admission mechanism and communicate with other blockchains. Poly Network has already integrated Bitcoin, Ethereum, Neo, Ontology, Elrond, Ziliqa, Binance Smart Chain, Switcheo and Huobi ECO Chain.”
Hope you will transfer assets to addresses below:
Polygon: 0xA4b291Ed1220310d3120f515B5B7AccaecD66F17 pic.twitter.com/mKlBQU4a1B
— Poly Network (@PolyNetwork2) August 11, 2021