Hyperbridge attacker mints 1B bridged Polkadot tokens in $237K exploit
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A Hyperbridge exploit let an attacker mint 1 billion bridged Polkadot tokens on Ethereum and cash out about $237,000, reviving debate over bridge security.
A hacker exploited the Polkadot-based cross-chain interoperability protocol Hyperbridge, netting about $237,000 and raising renewed security concerns about blockchain bridge infrastructure.
An attacker minted 1 billion bridged Polkadot (DOT) tokens in a single transaction on Hyperbridge, according to blockchain data shared by cybersecurity platform CertiK.
CertiK said the hacker managed to mint the tokens after he “slipped through a forged message to change the admin of Polkadot token contract on Ethereum.” However, the thin liquidity on Ethereum’s bridged DOT pool was overwhelmed by the 1 billion bridged DOT tokens, shrinking the attacker’s profits to just 108.2 Ether (ETH), worth around $237,000, after the swap.
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