A Multi-Layer Dynamic Security Framework for DeFi Smart Contracts
summary
A multi-layer framework instruments upgradeable contracts with runtime guards and ecosystem monitors: Trace2Inv mines invariants from historical transaction traces (2,000 candidates, 800 categorized, four categories cover 94%) and instantiates money/data-flow bounds that block many past exploits; CrossGuard enforces control-flow whitelists (trivial one-function transactions, stops 35/37 known hacks without training, training yields 0.115% false positives) and uses guard-merge optimizations to keep gas overhead below 20%, overall blocking 85% of past exploits with under 1% false positives.
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chapters (7)
- 0:00Introduction
- 1:45DeFi smart contract lifecycle
- 3:11Multi-layered defense framework
- 7:43Runtime invariant guards
- 13:05Control flow enforcement
- 19:58CrossGuard effectiveness
- 20:21Future DeFi risk analysis
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