A recent analysis by the Biteye content team reviewed 20 major crypto theft incidents, highlighting three key security trends in the industry. While technical vulnerabilities remain prevalent, social engineering and privilege attacks have resulted in greater financial losses. The attack focus is shifting from cross-chain bridges to internal protocol logic, oracles, and third-party dependencies. Additionally, single-point incidents are increasingly impacting the broader DeFi ecosystem. The report identifies North Korean hackers as responsible for the four largest thefts, collectively exceeding $2.5 billion in losses. Protocols such as Aave and Drift have been notably affected by these external risk transmissions.