Claude Code Backdoor on Cursor Hit 5,000 Devs — Check Now

Cursor's marketplace distributed a trojanized Claude Code extension to roughly 5,000 developers over an 11-hour window, according to byteiota. The report details what the malware did and how developers can check whether they are affected. The incident matters because it exposed a supply-chain path through an AI coding tool's extension marketplace to thousands of developers.

Cursor's marketplace served a trojanized Claude Code extension to ~5,000 developers for 11 hours. Here's what the malware did and how to check if you're affected. The post Claude Code Backdoor on Cursor Hit 5,000 Devs — Check Now appeared first on byteiota .