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Introduces the method of combining Obsidian with WorkBuddy to build a second brain, noting that foreign AI tools like Claude and Codex paired with Obsidian present barriers for domestic users.
A cyber security account alleges Anthropic embedded spyware in Claude Code that covertly targets Chinese users, sending timezone and proxy data via prompts.
Hidden code was discovered in the Claude Code binary that specifically detects Chinese users or proxy routes, and secretly modifies system prompts to add watermarks, sparking widespread concerns about trust in developer tools.
The author summarizes four methods for ordinary users to obtain overseas phone cards at low cost, including Xesim physical eSIM card, Giffgaff UK physical SIM card, advanced Giffgaff eSIM tricks, and Germany's O2 eSIM, primarily used for registering overseas services and two-factor authentication for accounts.