Ethereum's launch of the "trillion-dollar security plan" is of great strategic significance. The current ecosystem continues to expand, with frequent security risks such as hacker attacks and smart contract vulnerabilities, which seriously threaten user assets and system stability. This plan aims to comprehensively strengthen the security defenses through full-stack assessments, targeted improvements, and information dissemination, thereby enhancing user trust, clearing obstacles for large-scale applications and institutional entry, and helping Ethereum reach new heights.