ON · 2026-10-24 08:20 UTC

Strengthening Ethereum PoS: Strategies Against Byzantine Attacks

Ethereum's inactivity leak mechanism, introduced to restore chain finalization during network disruptions, may have safety vulnerabilities that Byzantine validators could exploit. Researchers analyzed how penalizing inactive validators could allow Byzantine validators to expedite conflicting branch finalization or exceed the one-third voting power safety threshold. The study revisits the probabilistic bouncing attack, demonstrating potential ways the inactivity leak could be leveraged to breach blockchain safety properties.

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