According to data from DefiLlama and statistics from Unfolded, 83 security incidents have occurred in the cryptocurrency industry in the second quarter of 2026, setting a new record for the number of hacker attacks in a single quarter. Despite the significant increase in attack frequency, the total losses amount to approximately $755.3 million, still far below the historical peak of about $3.56 billion in the fourth quarter of 2020. Data shows that the current attack pattern is shifting from a few large-scale thefts to more frequent small-scale attacks, with the biggest incidents this quarter being the theft of $293 million from KelpDAO and $280 million from Drift Protocol. Cross-chain bridge attacks caused about $351 million in losses, accounting for nearly half of the total losses; breaches of administrator privileges and false token price manipulations account for about 37%, and private key leaks account for approximately 5.7%. (FinanceFeeds)