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Threat Intelligence Report

GlassWorm Sleeper Extensions Activate on Open VSX, Shift to GitHub-Hosted VSIX Malware

📅 March 18, 2026 📰 socket.dev 🔍 0 CVE(s) referenced

A sophisticated new GlassWorm malware campaign is covertly weaponizing sleeper extensions on Open VSX, using post-compilation obfuscation, blockchain-based command and control, and GitHub-hosted VSIX payloads to evade detection and deliver arbitrary code execution across multiple developer environments.

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