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Claude Code's default telemetry sends Anthropic SHA-256 hashes of files it reads

AI · Security · 2026-10-28 09:28

Tests reveal that Claude Code sends unsalted SHA-256 hashes of file contents and device IDs to Anthropic by default, even when using third-party models or remaining logged out. This undisclosed telemetry has sparked significant privacy concerns among users.

Source: agenticbench.org


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