Major crypto attacks in May 2026 resulted in $81.7 million in losses, with cross-chain protocols remaining the primary target

According to on-chain analyst PeckShield (@PeckShieldAlert), the cryptocurrency sector experienced 40 major hacking incidents in May 2026, resulting in total losses of $81.7 million—a 87.4% decrease from $647 million in April. Cross-chain protocols remained the primary target: eight major bridge and cross-chain attacks collectively caused $33.28 million in losses, accounting for 41% of the month’s total losses.