Crypto界网 April 3 News, according to DefiLlama data, in the first quarter of 2026, cryptocurrency hackers stole over $168.6 million worth of digital assets from 34 decentralized finance (DeFi) protocols, a significant decrease compared to the same period last year. Data shows that the largest security breach of the quarter was a private key leak involving StepFinance worth $40 million in January, followed by a smart contract manipulation incident that resulted in the theft of $26.4 million worth of Ether. On January 8, Truebit experienced a major security vulnerability. The third-largest security incident was a private key leak event on March 21 targeting stablecoin issuer ResolvLabs.