The author analyzes the vulnerabilities in cross-chain bridge architectures and proposes prevention measures to mitigate potential exploits.
Cross-chain bridges face design flaws leading to vulnerabilities, requiring prevention measures and impact reduction strategies.
Lack of end-to-end value accounting in cross-chain transactions is a fundamental design flaw that enables a wide range of attacks on cross-chain bridges. A simple balance invariant that checks for matching inflows and outflows can effectively identify known attacks and likely new attacks.
Cross-chain bridges, while crucial for blockchain interoperability, are highly vulnerable to attacks, demanding robust detection tools like BridgeGuard, which leverages transaction graph analysis to identify and categorize attack patterns.