The compromised Anthropic Claude Code extension version 2.1.313 was published under Anthropic's legitimate publisher identity anthropic.claude-code

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From the articleA Supply Chain Attack Put Malicious Anthropic Claude Extensions on Thousands of DevicesAlso in Malicious Claude Code extension in Cursor's marketplace attempted remote access and data theft, Anthropic: That Claude Code extension compromise… couldn't be us, Anthropic VS code extension on Cursor backdoored for nearly 12 hours, Official Claude Code Extension on Cursor Marketplace Trojanized with Persistent SSH Backdoor

441e85161Article

A Supply Chain Attack Put Malicious Anthropic Claude Extensions on Thousands of Devices

441e85161Article

Malicious Claude Code extension in Cursor's marketplace attempted remote access and data theft

441e85161Article

Anthropic: That Claude Code extension compromise… couldn't be us

441e85161Article

Anthropic VS code extension on Cursor backdoored for nearly 12 hours

441e85161Article

Official Claude Code Extension on Cursor Marketplace Trojanized with Persistent SSH Backdoor