PeckShield has documented 14 major cross-chain bridge exploits that resulted in hackers stealing a combined $340.7 million from cross-chain protocols as of June 1, 2026, underscoring persistent security vulnerabilities in interoperability infrastructure.
The attacks highlight the continued risks facing bridge protocols, which enable asset transfers across multiple blockchains but remain attractive targets for sophisticated threat actors. Cross-chain bridges have historically been among the most vulnerable components of the crypto ecosystem, with losses accumulating steadily as adoption of multi-chain strategies expands across decentralized finance and broader cryptocurrency applications.
The scale of losses—averaging approximately $24.3 million per incident—demonstrates that even high-profile security audits have failed to eliminate fundamental architectural weaknesses. These breaches directly impact user confidence in bridge infrastructure and reinforce the need for enhanced security protocols and insurance mechanisms before cross-chain solutions achieve mainstream institutional adoption.