BlockchainIntermediate#Security#Infrastructure
Bridge Risk
B
Definition
The technical and security risks associated with moving assets between different blockchains, often vulnerable to exploits.
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Concept Diagram
Key Takeaways
1
Cross-chain bridges are the most exploited attack surface in crypto with billions lost to hacks
2
Bridges require trusting intermediate systems to lock and mint assets across chains
3
The Ronin bridge hack ($625M) and Wormhole exploit ($325M) demonstrate catastrophic bridge failures
4
Minimize bridge exposure by using established bridges and not keeping funds bridged longer than necessary
Practical Example
The Ronin Bridge hack in March 2022 resulted in $625M stolen — attackers compromised 5 of 9 validator keys, minted fake deposits, and drained the bridge. This is why professionals limit cross-chain exposure.
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Related Terms
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Flash LoansUncollateralized loans that must be borrowed and repaid within the same blockchain transaction, often used for arbitrage.
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Atomic SwapA smart-contract technology that enables the direct exchange of cryptocurrencies across different blockchains without intermediaries.
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Cross-Chain BridgeA protocol that enables the transfer of assets and data between two different blockchain ecosystems.
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Layer 2 (L2)A secondary framework or protocol built on top of an existing blockchain (L1) to improve scalability and transaction speed.
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