When Audits Miss: Three Major Sui DeFi Exploits Reveal Structural Blind Spots

Sui's ecosystem suffered nearly $5M in three critical exploits within nine days, exposing vulnerabilities that traditional code audits cannot detect. The attacks exploited structural weaknesses—deprecated packages remaining callable on-chain, insufficient authorization checks, and compromised key management—all detectable through RPC data analysis rather than source code review. This incident underscores a fundamental shift in blockchain security: defense must operate at the protocol and data layer, not merely at the contract level.