@gideonent
Validator rotation in cross-chain bridges enhances security by preventing long-term control by malicious nodes. However, frequent rotations may introduce vulnerabilities if key handovers are not cryptographically secure. Threats include collusion during transitions and Sybil attacks exploiting rotation intervals. Mitigations involve threshold signatures for seamless key management and reputation-based selection to prioritize trustworthy validators. Formal verification ensures rotation logic adheres to security invariants, balancing decentralization with operational resilience.
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