Anthropic: Tampered Claude Code Copy on Cursor — SkimNews
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- Cursor’s marketplace was used by a malicious actor to publish a “tampered” copy of the Claude Code extension; Anthropic said it did not build or publish that copy.
- Anthropic said it was working with Cursor on the incident and that the event was not a compromise of Anthropic’s systems.
Why it matters: Cursor’s marketplace is the access point implicated in the incident, while Anthropic says its own systems were not compromised. The reported problem is therefore focused on one tampered Claude Code extension, and Anthropic and Cursor are working together on the marketplace incident rather than an Anthropic-system breach.
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