Crypto hackers stole about $775 million across 83 incidents in Q2 2026, making it the most active quarter on record for attacks, according to DefiLlama data. While the quarter set a record for frequency, total losses remained below the industry's worst historical dollar-loss periods, with Q4 2020 still holding that mark at $3.56 billion. KelpDAO and Drift Protocol together accounted for more than three-quarters of Q2's stolen funds, and cross-chain bridge vulnerabilities represented an estimated $351 million of losses. The quarter was marked less by a single catastrophic breach than by a steady run of smaller exploits, with attackers also increasingly targeting compromised admin access, token price manipulation and deprecated smart contracts.