Web3 Security Losses Hit $764 Million in Q2 2026, With 88.3% From Compromised Keys and Infrastructure

According to Hacken's Q2 2026 security report, Web3 suffered security losses of $763.9 million across 67 incidents in the second quarter, marking the most severe quarter since Q2 2025. Compromised keys and infrastructure damage accounted for 88.3% of total losses, approximately $674.5 million. Smart contract vulnerabilities remained the most common attack vector, associated with 44 of the 67 incidents but resulting in only 11% of losses. Approximately 75.5% of losses stemmed from two incidents attributed to North Korean threat actors. The report noted that 14 audited protocols were breached during the quarter.
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