Group 1 - Kuaishou has tightened the usage permissions for several third-party programming tools, leading to issues where employees cannot access tools like Cursor and Claude Code without special approval [1] - The rationale behind this decision is to prioritize code and data security, especially in commercial and core business departments, to prevent potential leaks of algorithms and business strategies [1] - Other major companies, such as ByteDance and Amazon, have also implemented similar restrictions on tools like Cursor, indicating a common industry approach to balancing efficiency with security [1]