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Cursor says a modified Claude Code extension tried to plant a backdoor

Cursor says up to 5,000 users may have been affected, and that Anthropic did not make the build.

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This brief comes from Tech Twitter’s edited headlines. The posts below are the sources grouped with the story; statements in them belong to their authors.

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Cursor says a modified Claude Code extension in its marketplace tried to plant an SSH backdoor and may have affected up to 5,000 users. The company says the build was not made by Anthropic and has since been removed.
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  1. Cursor says a modified Claude Code extension tried to plant a backdoor

  2. Cursor says modified Claude Code extension tried to plant backdoor

  3. Cursor says modified Claude Code extension tried to plant SSH backdoor

  4. Cursor says modified Claude Code extension tried to plant backdoor

  5. Cursor says a modified Claude Code extension tried to plant SSH backdoor

  6. Cursor says a modified Claude Code extension tried to plant SSH backdoor

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