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Morning Edition · Saturday, October 3, 2026Published at 1:57 AM EDT · New York
Aztec Still Awaits a Fix for a Proving Flaw That Could Accept Invalid Transactions
Contributors say chain history cannot show whether the defect was ever used, and a separate researcher reported ten cases of verification code that returns success without checking anything.
Aztec, the privacy-focused Ethereum layer-2, still carries an unfixed critical defect in the proving system behind its Alpha V5 network. Contributors found it through internal auditing assisted by artificial-intelligence tooling and publish…
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Part of a tracked trend
Proving-System Bugs Become a Distinct Rollup Risk
Soundness defects in zero-knowledge proving systems will keep surfacing as a risk class separate from smart-contract exploits, because validator re-execution — the fallback most rollups rely on — cannot catch them, forcing teams into embargoed disclosure timed to upgrades and pushing users toward proof-system diversity and escape hatches.
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