ZetaChain dismissed bug report that could have prevented $334K exploit

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Source: ZetaChain “This was not an opportunistic attack,” ZetaChain said in its post-mortem. The attacker funded their wallet through Tornado Cash three days before the exploit, deployed a purpose-built drainer contract on ZetaChain and ran an address poisoning campaign before seeding it into their transaction history via dust transfers. ZetaChain added that a patch permanently disabling the arbitrary call functionality is being rolled out to mainnet nodes. The platform also removed unlimited token approvals from its deposit flow, replacing them with exact-amount approvals going forward. Related: Ethical hacker intercepts $2.6M in Morpho Labs exploit A new study by a16z tested whether an off-the-shelf AI agent could go beyond identifying DeFi vulnerabilities and actually produce working exploits. Using OpenAI's Codex against a dataset of 20 real Ethereum price manipulation incidents, researchers ran the agent in a sandboxed environment with no access to future transaction data and no guidance on how the attacks worked. The agent succeeded in just 10% of cases. However, when researchers fed the agent structured knowledge about common attack patterns and exploit workflows, the success rate jumped to 70%. Magazine: How to fix suspected insider trading on Polymarket and Kalshi

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