The trillion-dollar goal of the Ethereum security plan is not clearly defined in the currently available public information.

From the perspective of the plan's objectives, it aims to elevate Ethereum's security to a level that supports the global economy and internet infrastructure, allowing users to securely manage assets on-chain while supporting institutions and governments in hosting trillion-dollar level values on Ethereum. This goal is more of a vision and an expectation for future development, aimed at emphasizing the comprehensive enhancement of security across multiple levels within the Ethereum ecosystem, enabling Ethereum to bear large-scale value asset custody and support global economic activities, rather than being derived from a specific mathematical model or formula.