A recent exploit on the Polkadot-based cross-chain interoperability protocol Hyperbridge has raised renewed security concerns about blockchain bridge infrastructure. An attacker minted 1 billion bridged Polkadot (DOT) tokens in a single transaction, netting approximately $237,000. This incident highlights the vulnerabilities of blockchain bridges, which have become a prime target for hackers. On-chain metrics suggest that the total value locked (TVL) in blockchain bridges has surpassed $10 billion, making them an attractive target for malicious actors. The crypto community is calling for more robust security measures to prevent such exploits in the future. Industry observers note that the increasing number of hacks and exploits is a major concern for the crypto industry, with over $1 billion lost to hacks in 2025 alone.