# Claude Code Backdoor on Cursor Hit 5,000 Devs — Check Now > Source: > Published: 2026-10-30 16:20:57+00:00 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 .