Yhn LifeFashion first seen 1 d ago, last 12 h ago, peak #1

Claude Code extension with backdoor hits Cursor marketplace

Original: Claude Code VS Code extension with backdoor released on Cursor marketplace

A malicious version of Anthropic's Claude Code extension for VS Code, containing a backdoor, was published on the Cursor extension marketplace. Reporting by DoublePulsar says Anthropic was hacked to deliver a remote access trojan to Claude developer laptops worldwide. Developers are being urged to check whether they installed the compromised extension.

Why now: A supply-chain attack on a widely used AI coding tool puts developers' machines at risk, prompting urgent warnings to check installations.

AnthropicClaude CodeCursorVS CodeDoublePulsar

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Evidence

• Claude Code VS Code extension with backdoor released on Cursor marketplace · bashtoni · 399

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