Polkadot Hyperbridge Exploit Reports Debunked as Prank

A cybersecurity incident involving Polkadot's cross-chain bridge Hyperbridge sparked widespread concern in the cryptocurrency community when reports emerged of an attacker minting 1 billion unauthorized bridged DOT tokens on the Ethereum network. The alleged breach, first flagged by blockchain security firm CertiK on April 13, prompted a brief dip in Polkadot's native DOT token price, though the core Polkadot relay chain remained unaffected.

According to on-chain analytics from platforms like Lookonchain and Arkham Intelligence, the attacker exploited a vulnerability in the Hyperbridge gateway smart contract. By forging a message, the perpetrator gained administrative control over the bridged DOT token contract on Ethereum, enabling the unauthorized creation of 1 billion tokens in a single transaction. These synthetic tokens, representing Polkadot's native asset on Ethereum for cross-chain interoperability, were then liquidated in one comprehensive swap, yielding approximately 108.2 ETH, valued at around $237,000 at the time. The limited liquidity in the bridged DOT market on Ethereum contained the financial impact, as low trading volume prevented a larger price collapse in...