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James MaguireOct 30, 2026

Malicious Claude Code Extension Affects Up to 5,000 Cursor Users

Cursor has disclosed a security incident involving malicious versions of Anthropic’s Claude Code extension that attempted to install a persistent backdoor on developers’ computers. The company initially estimated that up to 5,000 users could have been affected, highlighting the security risks associated with compromised software development tools. The compromised extension packages, identified as Anthropic.claude-code versions […]

AnthropicClaude Code