Modern Reentrancy Attacks Still Drain Millions—and AI Can Catch Them

Reentrancy remains one of smart contract development's most expensive blind spots, costing protocols millions annually despite being discovered in 2016. Traditional defenses like ReentrancyGuard and pattern matchers fail against modern variants—cross-function, read-only, and callback-based attacks—exposing the limitations of static analysis. LLM-based auditors represent a critical breakthrough, reasoning contextually about call sequences and state changes to catch exploits that traditional linters consistently miss.