7-9 October, 2026 Prague, Czechia View More Details & Registration Important Note:Timing of sessions and room locations are subject to change.
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The Shai Hulud worm family has stalked the npm supply chain across multiple variants, stealing credentials from developer and CI environments, propagating via stolen npm and GitHub identities, poisoning workflows, and carrying a dead switch that can wipe home directories on command. Version four just crossed a new line. SANDWORM_MODE, deployed across 19 malicious npm packages, keeps the full prior playbook and adds AI toolchain poisoning via MCP server injection into Claude Code, Claude Desktop, Cursor, and Windsurf. The rogue MCP server uses prompt injection to instruct AI assistants to silently exfiltrate SSH keys, AWS credentials, and LLM API tokens from nine providers, without alerting the user. We present the full story: the Shai Hulud lineage, how the obfuscated three-layer loader was detected, how 19 packages were linked to one operator, how a bidirectional CI worm loop was built from a weaponized GitHub Action, and how coordinated takedown with npm, GitHub, and Cloudflare dismantled the infrastructure, along with what the dormant polymorphic engine tells us about where version five is heading.
Security researcher at Socket.dev. Securing Open Source Supply chain, for various fortune 500 customers like Netflix, Salesfore, etc. and other leading AI companies like Anthropic, OpenAI and many more.
