Balancer hack analysis and guidance for the DeFi ecosystem
blog.trailofbits.com | blog | #web3 | #smart-contracts | #defi | #fuzzing | #blockchain | #exploit-analysis | #rounding-vulnerability | #invariant-testing
Summary
A retrospective on the $100M Balancer v2 hack, caused by a long-dormant rounding direction flaw, with guidance on invariant testing, fuzzing, and formal verification for DeFi teams.
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- Collected
--- id: 1326 title: "Balancer hack analysis and guidance for the DeFi ecosystem" source_domain: blog.trailofbits.com source_url: "https://blog.trailofbits.com/2025/11/07/balancer-hack-analysis-and-guidance-for-the-defi-ecosystem/" published_at: "2025-11-07 23:00" tags: ["web3", "smart-contracts", "defi", "fuzzing", "blockchain", "exploit-analysis", "rounding-vulnerability", "invariant-testing"] phying_url: "https://phying.com/item/1326" lang: en --- # Balancer hack analysis and guidance for the DeFi ecosystem ## Summary A retrospective on the $100M Balancer v2 hack, caused by a long-dormant rounding direction flaw, with guidance on invariant testing, fuzzing, and formal verification for DeFi teams. ## Intelligence Metadata - **Sources:** blog.trailofbits.com - **Published:** 2025-11-07 23:00 - **Original:** https://blog.trailofbits.com/2025/11/07/balancer-hack-analysis-and-guidance-for-the-defi-ecosystem/ - **Phying News:** https://phying.com/item/1326