According to online reports, the Ethereum Foundation issued a document saying that it announced the "Trillion-level Security"(1TS) plan last month. This is an ecosystem-level effort to upgrade Ethereum security, and released its first 1TS report today to outline existing security challenges in the Ethereum ecosystem. The Security Challenge Overview report outlines challenges in six key areas: user experience: issues that affect users 'safe management of private keys, interaction with on-chain applications, and signing transactions; smart contracts: security of smart contract components of Ethereum applications, and shaping their software production life cycles; infrastructure and cloud security: Infrastructure issues on which Ethereum applications rely (including specific to cryptocurrencies and traditional infrastructure), such as L2 chains, RPC, cloud hosting services, etc.; consensus protocols: security features of the core protocol that protect the Ethereum blockchain from attacks or manipulation; monitoring, event response and mitigation: challenges faced by users and organizations when responding to security breaches, especially in recovering funds or managing subsequent impacts; social layer and governance: Ethereum's open source governance, community and organizational ecosystem.